Google Ads Audience Targeting: 2026 Guide

10×
Display remarketing achieves a 0.70% average CTR versus 0.07% for standard display — 10× higher — while reducing average CPA from $49 (prospecting) to $26 (remarketing).
Source: Searchlab Retargeting Statistics 2026 · Google, Meta, Criteo, eMarketer aggregated
What Is Google Ads Audience Targeting?
Google Ads audience targeting is the set of controls that determines who sees your ads. In 2026, it operates across four dimensions — audience segments, location, device, and ad scheduling — and the governing mental model is signals to Google's algorithm, not fences around campaigns.
Audience segments, location parameters, device targets, and ad schedule settings each send directional information to Google's machine learning layer. Under Smart Bidding and Performance Max, that machine learning layer interprets them as weighted inputs rather than strict inclusion or exclusion rules. A segment added in observation mode tells the algorithm to track performance for that group; a segment added in targeting mode narrows the eligible audience pool — but Smart Bidding still adjusts bids continuously within that pool based on real-time signals. Understanding this distinction is foundational before touching any other setting. Google Ads bidding strategies such as Target CPA and Target ROAS treat audience membership as one signal among hundreds, which means an audience adjustment set by the advertiser does not override what the algorithm decides to bid in any individual auction.
The four targeting dimensions do not operate independently — their interaction is shaped by Google Ads campaign types. Search campaigns allow precise audience layering in observation or targeting mode. Display campaigns support demographic and affinity overlays alongside placement controls. Performance Max campaigns expose only asset groups and audience signals; the algorithm controls delivery across all inventory types simultaneously. Shopping campaigns surface audience bid adjustments but route most decisioning through product feed relevance. Knowing which levers are available in a given campaign type prevents structural misconfigurations that surface as wasted spend in inherited accounts. According to Google Ads Help, "About audience segments", Google Ads offers seven active audience segment types as of 2026: Affinity, In-Market, Custom Segments, Your Data (RLSA), Customer Match, Detailed Demographics, and Life Events.
The post-Privacy Sandbox landscape has not eliminated third-party cookie-based targeting, but it has eroded its reliability enough that first-party data is now the structural advantage in competitive verticals. Third-party cookies remain partially active in Chrome but are deprioritised by browser-level controls and consent frameworks across the EU and California. Customer Match — which matches uploaded CRM data against signed-in Google accounts — is the durable first-party lever because it does not depend on cookie state at all. Its effectiveness scales directly with the quality of the conversion signal feeding it, which makes Google Ads conversion tracking and attribution a prerequisite, not an optional layer. Accounts without clean first-party conversion data cannot use Customer Match effectively regardless of list size.
One persistent misconception needs correcting immediately: Similar Audiences (also called similar segments) are not available in 2026. Google deprecated them in May 2023 and removed them from all campaigns in August 2023. Any agency strategy document, course material, or consultant recommendation that references Similar Audiences as a live feature is using outdated documentation. Google's own transition guidance confirmed the removal and directed advertisers to optimised targeting and broad match as replacements. See SA360 Help, "Changes to audience targeting: similar audiences" for the official deprecation timeline. MB Adv Agency treats the audience taxonomy, geotargeting presence setting, and Customer Match upload as the three-item audit checklist on every new Google Ads account. These three settings account for the majority of structural targeting errors found in inherited accounts.
Key Takeaways
- Google Ads offers 7 active audience segment types in 2026: Affinity, In-Market, Custom Segments, Your Data (RLSA), Customer Match, Detailed Demographics, and Life Events. Similar Audiences (similar segments) are not one of them — they were deprecated in May 2023 and removed from all campaigns in August 2023.
- Under Smart Bidding (Target CPA, Target ROAS, Maximize Conversions), audience segments function as signals to Google's AI — the algorithm expands delivery beyond defined segments based on auction-time patterns. Bid adjustments on audiences are absorbed and ignored by the algorithm.
- The default location targeting setting "Presence or interest" targets users who have searched about your target location, not only users physically located there. For local service businesses, this produces out-of-area clicks with no commercial intent. Switch to "Presence only" immediately after campaign creation.
- Customer Match requires 90 days of Google Ads history and $50,000 in lifetime spend to activate. The minimum list size across all networks dropped to 100 users in December 2025, reduced from the previous 1,000-user minimum for Search campaigns.
- Display remarketing CTR (0.70%) is 10× higher than cold display CTR (0.07%). Remarketing average CPA ($26) is 47% lower than cold prospecting average CPA ($49). Source: Searchlab Retargeting Statistics 2026.
- The only bid adjustment that reliably applies under every Smart Bidding strategy is the -100% device exclusion. All other manual adjustments — location modifiers, audience bid adjustments, demographic adjustments, ad schedule multipliers — are overridden by the algorithm in Smart Bidding campaigns.
10×
Remarketing CTR vs. Cold Display
Searchlab 2026
47%
Lower CPA: Remarketing vs. Prospecting
Searchlab 2026 — $26 vs. $49 avg
100
Minimum Audience Size, All Networks
Google Ads, December 2025
70%
Higher Conversion Probability After Remarketing
Searchlab 2026 · Linear Design 2025
The 2026 Google Ads Audience Segment Taxonomy
Google Ads offers 7 active audience segment types in 2026. Each targets users at a different funnel stage using different signal sources — choosing the right type for the right campaign objective determines whether budget reaches buyers or browsers.
The seven segment types are: Affinity, In-Market, Custom Segments, Your Data (RLSA), Customer Match, Detailed Demographics, and Life Events. Affinity segments (150+ categories) reach users whose long-term interests match a category — top-of-funnel awareness in Display and Video. In-Market segments flag users actively researching a purchase, with First Pier reporting a 10% CTR lift over Affinity in direct comparisons — making them the mid-funnel default for Search, Display, and Performance Max. Custom Segments let advertisers build audiences from keyword history, URLs visited, or apps used — a precision layer for Display, Demand Gen, and PMax when built-in segments are too broad. Your Data (RLSA) and Customer Match operate at the bottom of the funnel on users who have previously interacted with the brand or exist in the CRM. Detailed Demographics and Life Events layer identifiable life circumstances — household income bracket, parental status, home ownership, recent milestones like marriage or relocation — across any campaign type. Per Google Ads Help, "About audience segments", all seven types are available for use as of 2026.
A foundational distinction determines how segments interact with campaign delivery: observation mode versus targeting mode. Observation mode adds a segment for measurement and bid adjustment data without restricting who sees the ad — the full keyword-eligible audience still enters the auction. Targeting mode restricts delivery to that segment only. For Search campaigns, observation is the starting point; targeting is applied only after performance data confirms a segment warrants its own constrained pool. For Smart Bidding campaigns, this distinction has a further layer: bid adjustments applied to audiences in observation mode are absorbed and ignored by the algorithm. Audience data still feeds the machine learning model as a signal, but the advertiser-set multiplier has no auction-level effect. Google's algorithm determines bids from its own signals, of which declared audiences are one input among hundreds.
Under Smart Bidding, audience segments are directional signals — not hard targeting filters. Google's algorithm expands delivery beyond declared segments whenever its models identify higher-value users outside the defined list. This expansion behavior is working as intended, not a bug. Campaigns that need hard audience constraints (remarketing-only RLSA on Search, for example) must use targeting mode rather than observation mode.
For e-commerce and direct-to-consumer advertisers, the interaction of segment types with Performance Max is particularly consequential. Fashion PPC services and pet supplies PPC accounts typically feed four signal types into PMax simultaneously — Your Data (past purchasers and site visitors), Customer Match (email list), Custom Segments (competitor URL visitors), and In-Market (category segments) — and allow the algorithm to prioritize across them by auction-time conversion probability. The segment type hierarchy matters at campaign inception: starting with Your Data and Customer Match signals gives the algorithm a higher-quality baseline than starting with only broad Affinity or In-Market segments, which the model must refine from scratch. MB Adv Agency configures audience signal layers sequentially at PMax launch — first-party data in asset group one, intent-based segments in asset group two — rather than blending all signal types into a single undifferentiated asset group, which reduces the algorithm's ability to attribute performance to specific signal sources.
| Segment Type | Signal Basis | Funnel Stage | Best Use Case | Campaign Types |
|---|---|---|---|---|
| Affinity | Long-term interest patterns; 150+ segments | Top-of-funnel (awareness) | Brand awareness; reach-focused Display and Video campaigns | Display, Video, PMax |
| In-Market | Active purchase research signals; search + content consumption | Mid-funnel (consideration) | High-intent demand capture; 10% higher CTR than Affinity | Search, Display, PMax |
| Custom Segments | Keywords entered, URLs visited, apps used | Mid-to-bottom funnel | Competitor URL audiences; niche intent targeting | Display, Demand Gen, PMax |
| Your Data (RLSA) | Site visitors, app users, YouTube engagers (cookie + tag-based) | Bottom-of-funnel (retargeting) | RLSA Search bid uplift; Display remarketing; PMax signals | Search, Display, Video, PMax |
| Customer Match | Hashed CRM data (email, phone, address) matched to signed-in Google accounts | Bottom-of-funnel / retention | CRM re-engagement; suppression; PMax signals | Search, Display, Video, Shopping, PMax |
| Detailed Demographics | Life facts: parental status, homeownership, marital status, education, income | Any stage (qualifying overlay) | Overlay to refine Affinity/In-Market; exclusion of ineligible audiences | Search, Display, Video |
| Life Events | Major milestone signals: moving, marriage, graduation, job change, new baby | Top-to-mid funnel (transitional intent) | Real estate, moving services, financial products tied to life transitions | Display, Video |
Sources: Google Ads Help, "About audience segments"; WordStream 2025; ClickedOn 2026.
Location Targeting: Presence or Interest vs. Presence
Google defaults every new campaign to "Presence or interest" — a setting that shows ads to users who searched about your location, not just users physically in it. For local service businesses, this is the most common single misconfiguration driving wasted spend.
Google Ads offers two location targeting options. "Presence or interest" — the campaign default — reaches users who are physically in the target area, regularly visit it, or have demonstrated search interest in it. "Presence" restricts delivery to users who are physically located in or regularly visit the target area, excluding those who merely searched about it. According to Google Ads Help, "About advanced location options", both settings are available in the campaign location settings panel, but only Presence requires a manual change from the default.
The practical impact of the default setting is direct. A user located in Miami who searches "emergency plumber Denver" triggers ads targeted to Denver on the default "Presence or interest" setting — that user has no commercial intent to hire a Denver plumber. For plumbing PPC services and HVAC PPC services accounts, this produces a persistent volume of out-of-area clicks carrying real cost and zero conversion probability. The correction requires a single setting change: navigate to the campaign's location settings, expand "Location options," and switch from "Presence or interest" to "Presence." Google's own data (via PPCAssist) indicates Presence-or-interest generates 5% more conversions in Travel, Real Estate, and Education verticals — because users genuinely plan to travel or relocate — but the directional opposite holds for local service businesses where physical proximity is required to deliver the service.
Presence-or-interest is correct for real estate, travel, and education advertisers — users searching out-of-area often have genuine purchase intent. It is incorrect for any business that requires the customer to be physically present: plumbers, HVAC technicians, roofers, dentists, and legal practices serving defined jurisdictions. These accounts must switch to Presence on every campaign, not just geographic campaigns. See Teach Traffic, "Google Ads Location Targeting 2024" for a practitioner breakdown of this configuration.
For local service advertisers in specific markets, the location setting interacts with the geographic radius configuration. PPC management in Austin accounts serving a defined metro boundary — say, Austin city limits plus the surrounding 25-mile radius — should set Presence targeting with the geographic boundary at the exact service area, not the broader metro statistical area. Accounts that inherit broad location targeting from previous agencies frequently combine Presence-or-interest with an oversized geographic boundary, multiplying the out-of-area spend problem. MB Adv Agency has observed this in Flagstaff HVAC PPC accounts and Missoula plumbing PPC accounts where previous campaigns were targeting state-wide rather than city-specific radii, with the default location setting adding further geographic bleed.
MB Adv Agency flags the location setting as the first audit item on every inherited local account — it is the most common single misconfiguration found, present in the majority of local campaigns received from previous agencies.
| Setting | Who Sees Ads | Campaign Default? | Use When | Risk |
|---|---|---|---|---|
| Presence or interest | Users physically in the area, who regularly visit, or who searched about the location | Yes (campaign default) | Travel, real estate, education — where out-of-area search intent reflects genuine purchase intent | Generates out-of-area clicks with no commercial intent for local service businesses — Miami user searching "Denver plumber" triggers Denver ads |
| Presence | Users physically located in or who regularly visit the target area only | No — requires manual selection | All local service businesses: HVAC, plumbing, legal, dental, roofing — any business requiring physical proximity to deliver the service | Reduces reach in verticals where out-of-area demand is genuine (real estate, travel); not a risk for local service businesses |
Sources: Google Ads Help, "About advanced location options"; Teach Traffic, "Google Ads Location Targeting 2024".
Customer Match: First-Party Data Without Cookie Dependency
Customer Match matches users against Google's own logged-in user graph using hashed CRM data — no cookie dependency. For any advertiser with a qualifying account and a CRM list above 100 contacts, it is the most structurally reliable audience lever available in 2026.
Customer Match works by hashing personally identifiable information — email addresses, phone numbers, and physical mailing addresses — before upload. Google matches that hashed data against its signed-in user graph across Search, Display, YouTube, Shopping, and Performance Max. Because the match occurs at the account level (signed-in Google user) rather than at the browser cookie level, the audience is unaffected by Safari ITP, Firefox Enhanced Tracking Protection, or the evolving Chrome Privacy Sandbox restrictions. This structural advantage over cookie-based RLSA becomes more pronounced as browser-level restrictions extend to more users. Customer Match lists with 540 days of activity are eligible; contacts older than 540 days are excluded from matching. According to Google Ads Help, "About Customer Match", eligibility requires 90 days of Google Ads account history and a minimum of $50,000 in lifetime spend.
The December 2025 threshold reduction was significant. The minimum list size for Customer Match dropped to 100 users across all networks — including Search, where the previous minimum was 1,000 users. Per Search Engine Land, "Google lowers audience size limits" and ppc.land, "Google slashes audience targeting thresholds to 100 users", this change makes Customer Match accessible to smaller advertisers and to verticals with naturally limited CRM sizes — professional services, legal, dental, financial advisory — where a list of 300–500 past clients previously fell below the Search minimum. For legal PPC services and financial services PPC accounts, the practical effect is that almost any active CRM now qualifies for Customer Match on Search.
April 1, 2026 API change: Google Ads API uploads for Customer Match were disabled for developer tokens classified as inactive. Advertisers relying on automated CRM sync via the Google Ads API must migrate to the Data Manager API to continue scheduled uploads. One-time manual uploads via the Google Ads UI are unaffected. Per ALM Corp, "Google Disabling Customer Match in Ads API (April 2026)", this affects any account using third-party CRM integration tools or custom API scripts with inactive developer tokens.
In Performance Max, Customer Match lists function as audience signals in asset groups. For real estate PPC and dental PPC accounts, configuring PMax with a Customer Match signal of past clients (for exclusion) alongside a separate In-Market signal (for prospecting) gives the algorithm two distinct behavioral targets, improving the quality of its audience expansion relative to broad Affinity-only signal configurations. The standard recommendation is to segment Customer Match lists by recency (last 90 days vs. last 180 days vs. last 540 days) and upload them as separate lists so asset group bids can be adjusted by engagement recency.
| Requirement / Parameter | Value / Detail |
|---|---|
| Account eligibility | 90 days of Google Ads history + $50,000 in lifetime spend |
| List minimum — Search | 100 users (reduced from 1,000 in December 2025) |
| List minimum — Display | 100 users (unchanged) |
| List minimum — YouTube | 100 users (unchanged) |
| Activity window | Last 540 days — contacts outside this window are excluded from matching |
| Upload method post-April 2026 | Data Manager API required for automated uploads; Google Ads API disabled for inactive developer tokens; manual UI uploads unaffected |
| Cookie dependency | None — matches on Google's logged-in user graph; unaffected by Safari ITP, Firefox ETP, or Chrome Privacy Sandbox changes |
Sources: Google Ads Help, "About Customer Match"; ppc.land, "Google slashes audience targeting thresholds to 100 users"; ALM Corp, "Google Disabling Customer Match in Ads API (April 2026)"; Search Engine Land, "Google lowers audience size limits".
US Search Demand: Google Ads Audience Targeting Keywords (May 2026)
Remarketing in Google Ads: Performance Benchmarks and List Architecture
Remarketing audiences — users who have already interacted with your site, app, or YouTube channel — deliver a 0.70% average CTR on Display versus 0.07% for cold display. The CPA gap is equally sharp: $26 for remarketing versus $49 for cold prospecting across channels.
URL-based remarketing lists (Your Data / RLSA) build audiences from Google tag or GA4 signals on site visitors. These lists are the oldest and most widely deployed remarketing mechanism in Google Ads — and the most affected by cookie erosion. Safari and Firefox block third-party cookies by default. Safari's Intelligent Tracking Prevention (ITP) limits first-party cookie persistence to 7 days in many configurations. The practical result: site visitor lists built on tag-based cookies consistently undercount the true retargetable audience in accounts with high Safari or Firefox traffic share, which is the norm for mobile-first consumer verticals and B2B audiences. This is not a campaign configuration error — it is a structural browser limitation. Accounts aware of this shrinkage should supplement URL-based lists with Customer Match and YouTube engagement audiences wherever eligible, since both are cookie-independent. Per Searchlab, "Retargeting Statistics 2026" — aggregating Google, Meta, Criteo, and eMarketer data — remarketing audiences are 70% more likely to convert than cold audiences across channels.
RLSA (Remarketing Lists for Search Ads) applies site-visitor audiences to Search campaigns in either observation or targeting mode. Per BestPPC, "Google Ads Remarketing 2025", RLSA delivers a +37% CTR uplift versus non-remarketing Search campaigns — a figure that reflects the search intent signal combining with prior brand interaction. The standard RLSA architecture for a mid-size account segments visitors by page depth: homepage visitors, product/service page visitors, and cart or contact page visitors (the highest-intent tier). Bid adjustments in observation mode are theoretically available, but as with all Smart Bidding campaigns, they are absorbed by the algorithm and produce no direct auction-level effect. RLSA in targeting mode — where only prior visitors see the ad — delivers the highest-purity audience for Search remarketing but eliminates new customer acquisition from that campaign entirely.
Cart abandonment remarketing lists are the highest-performing segment within the remarketing architecture. Searchlab 2026 reports an average $13 CPA for cart abandonment remarketing versus $26 for general remarketing and $49 for cold prospecting — a 62% lower CPA versus general remarketing and a 73% lower CPA versus prospecting. For supplements and nutrition PPC and fashion PPC services accounts, the cart abandonment list should always be the highest-priority segment in dynamic remarketing, with the most aggressive bid strategy and the shortest audience membership duration (typically 7–14 days to capture recency).
Dynamic remarketing produces materially better results than static remarketing: BestPPC 2025 reports 2–3× CTR uplift and +40% CVR versus static ads. Dynamic remarketing requires a product or service feed (Google Merchant Center for e-commerce; a custom business data feed for other verticals) and a Google tag configured to pass product IDs or service identifiers on viewed pages. The algorithm then automatically assembles the creative from feed items the user has viewed, producing personalized ad content without manual creative production per product. For e-commerce accounts — particularly fashion PPC services — dynamic remarketing operating on a complete Merchant Center feed is the single highest-ROI Display campaign type available. See also Linear Design, "Mastering Google Ads Remarketing" for implementation architecture.
Cookie erosion has made Customer Match the primary remarketing mechanism for lead-generation accounts with available CRM data. A lead-gen account for a conversion-tracked professional service — legal, dental, financial — can upload all converted leads as a Customer Match suppression list (to avoid re-bidding on existing clients), upload warmer prospects as a bid-uplift list, and add the CRM to PMax asset group signals. This architecture requires no cookie for audience membership. It relies entirely on Google's own signed-in user graph and is unaffected by browser-level privacy changes.
| Metric | Figure | Source |
|---|---|---|
| Avg CTR — Display remarketing | 0.70% | Searchlab 2026 |
| Avg CTR — standard Display cold | 0.07% | Searchlab 2026 |
| CTR gap: remarketing vs. cold | 10× (0.70% ÷ 0.07%) | Searchlab 2026 |
| RLSA CTR uplift vs. no remarketing (Search) | +37% | BestPPC 2025 |
| Avg CPA — remarketing all-channel | $26 | Searchlab 2026 |
| Avg CPA — cold prospecting all-channel | $49 | Searchlab 2026 |
| Avg CPA — cart abandonment remarketing | $13 | Searchlab 2026 |
| Conversion probability uplift after remarketing | 70% more likely to convert | Searchlab 2026 · Linear Design 2025 |
| Dynamic remarketing CTR vs. static | 2–3× | BestPPC 2025 |
| Dynamic remarketing CVR vs. static | +40% | BestPPC 2025 |
Note: All figures are cross-channel averages aggregated from Google, Meta, Criteo, and eMarketer data. Individual account results differ by vertical, audience quality, and creative format. Sources: Searchlab, "Retargeting Statistics 2026"; BestPPC, "Google Ads Remarketing 2025"; Linear Design, "Mastering Google Ads Remarketing".
Remarketing vs. Prospecting: Average CPA by Audience Stage (2026)
Performance Max Audience Signals: Directional Hints, Not Hard Targeting
Performance Max accepts five types of audience inputs — collectively called "audience signals" — that tell Google's AI which users to prioritize. The algorithm treats them as a starting hypothesis, not a hard boundary, and expands beyond them when it identifies higher-value users.
The five signal types accepted by PMax asset groups are: Your Data segments (site visitors, YouTube engagers, remarketing lists), Customer Match (hashed CRM lists), Interests and detailed demographics (Affinity, In-Market, Life Events, Detailed Demographics), Custom segments (keyword-based, URL-based, app-based audiences), and Search themes (up to 50 per asset group as of 2025, entered as free-text keyword themes). According to Google Ads Help, "About audience signals for Performance Max", all five signal types can be applied simultaneously within a single asset group, and the algorithm weights them by historical conversion correlation for each signal type.
The algorithm's treatment of signals is fundamentally different from its treatment of targeting mode audiences in standard campaigns. PMax signals define a starting audience hypothesis. The algorithm begins bidding more aggressively toward users who match the declared signals, then expands delivery as it identifies additional user clusters that convert at comparable or better rates. An advertiser running a real estate PPC campaign through PMax who provides a Customer Match signal of past property inquirers and a Life Events "moving" signal is not restricting delivery to those users — the algorithm will expand to reach anyone it predicts will inquire, using those signals as its prior. This expansion behavior is a feature of PMax's design, not a targeting failure. For financial services PPC accounts with strict compliance requirements around who can be advertised to, PMax's signal-based architecture requires additional campaign-level negative controls (up to 10,000 negative keywords as of 2025 additions) to exclude ineligible audiences.
Demand Gen lookalike segments changed in March 2026: the reach slider — previously a reach constraint — now functions as a signal strength control, not a hard delivery boundary. This means the algorithm reaches beyond the defined lookalike similarity threshold when it identifies conversion opportunities. Demand Gen lookalike segments are a separate product from the deprecated Similar Audiences. They are seeded from Customer Match or remarketing lists and are available only in Demand Gen campaigns — not in standard Search, Display, or Shopping. Per ppc.land, this change was rolled out globally through Q1 2026.
The 2025 control additions to Performance Max changed the practical management of PMax campaigns. Campaign-level negative keywords (up to 10,000 per campaign) are now available, removing a previous limitation that required account-level negatives for exclusion. Full search term reporting was added, allowing advertisers to see which queries triggered PMax inventory across the Search channel. Asset-level reporting enables performance attribution to individual headlines, descriptions, images, and videos — previously only available at the asset group level. Retention goals (separate from acquisition goals) allow PMax campaigns to optimize specifically toward returning customer revenue, which is relevant for subscription-based and repeat-purchase advertisers. The combination of these controls and the original signal-based audience architecture makes PMax substantially more transparent than its 2022–2023 iteration. See Google Ads campaign types for a full breakdown of PMax vs. Standard Shopping vs. Display campaign structures.
| Signal Type | What It Includes | How the AI Uses It | Recommendation |
|---|---|---|---|
| Your Data segments | Site visitors, YouTube engagers, app users — tag-based and analytics-based lists | Highest-priority starting signal — algorithm prioritizes users resembling these lists and expands from this behavioral baseline | Always include as primary signal; segment by recency (30/90/180 days) for cleaner algorithm guidance |
| Customer Match | Hashed CRM data (email, phone, address) matched to signed-in Google accounts | Cookie-independent signal; algorithm uses CRM behavioral profile to find similar high-value users | Segment by customer value (high LTV vs. one-time purchasers); use high-LTV list in top asset group for best signal quality |
| Interests and detailed demographics | Affinity, In-Market, Life Events, Detailed Demographics from Google's taxonomy | Broadest signal; used when first-party data is limited or to expand reach toward in-market users | Combine with first-party signals rather than relying on interests alone; use Life Events for real estate and moving-service verticals |
| Custom segments | Audiences built from keyword history, URLs visited, or apps used | Intent-based signal; algorithm uses competitor URL visitors and category keyword users as behavioral lookalike seed | Include top 5–10 competitor URLs and high-intent category search terms; refresh quarterly as competitive landscape evolves |
| Search themes | Free-text keyword themes entered per asset group; up to 50 per asset group (2025) | Guides inventory allocation toward Search; algorithm links themes to query patterns and prioritizes related search auctions | Use high-value commercial intent themes; align with keyword match type strategy in parallel Search campaigns to avoid internal cannibalization |
Sources: Google Ads Help, "About audience signals for Performance Max"; ALM Corp 2026; ppc.land Demand Gen lookalike update.
Bid Adjustment Types: Respected vs. Ignored Under Smart Bidding (2026)
Device Targeting and Ad Scheduling Under Smart Bidding
Under Smart Bidding, most bid adjustments are absorbed by the algorithm and have no practical effect. The one universally functional device lever is the -100% exclusion — it removes a device class entirely regardless of bid strategy.
The bid adjustment behavior matrix under Smart Bidding is frequently misunderstood, and its misunderstanding produces two common account errors: campaign managers applying location multipliers expecting geographic spend control, and applying ad schedule multipliers expecting time-of-day spend control. Both adjustments are overridden by the algorithm in Smart Bidding campaigns. According to Google Ads Help, "About bid adjustments", location adjustments, audience adjustments, and demographic adjustments are all ignored under Maximize Conversions, Maximize Conversion Value, Target ROAS, and Target CPA strategies. The algorithm uses its own real-time signals — device type, location, time, audience, query intent, and dozens of others — to determine the optimal bid in each auction. Manual adjustments on top of those signals are redundant and ineffective.
Two adjustments do retain functional effect under Smart Bidding. First, the -100% device exclusion is respected by all bid strategies including Smart Bidding. Setting a -100% bid adjustment on tablets removes tablets from ad delivery entirely — the device class cannot participate in the auction regardless of what the algorithm would otherwise bid. Second, under Target CPA specifically, a device modifier changes the CPA target for that device class: a +50% modifier on mobile tells the algorithm to target a CPA 50% above the campaign baseline for mobile auctions, while a -30% modifier on desktop lowers the desktop CPA target by 30%. This is the one Smart Bidding context where device adjustments alter the algorithm's behavior rather than being ignored. Per Bigeye Agency, "Google Ads Bid Adjustments in 2026", this Target CPA device behavior is the most frequently overlooked nuance in Smart Bidding configuration.
Tablet exclusion (-100% device adjustment) is the primary device lever for lead-generation accounts. Tablet traffic on Search campaigns consistently shows lower conversion intent and higher CPA than mobile or desktop in local service verticals. For legal PPC services and HVAC PPC services accounts, tablet exclusion is a standard configuration item — not an advanced setting. Per ZATO Marketing, "Bid Adjustments: When They Work, When They Don't", the -100% exclusion is one of the few manual controls that unambiguously overrides Smart Bidding regardless of strategy.
Ad scheduling under Smart Bidding follows the same logic: time-of-day multipliers are ignored. The algorithm already incorporates time as a bidding signal — it bids more aggressively during hours it predicts higher conversion probability based on historical account data. Applying a +20% ad schedule multiplier during business hours does not add 20% to those bids; the algorithm ignores the manual instruction and bids at whatever it predicts is optimal. The one functional ad schedule lever under Smart Bidding is the hard exclusion: setting a time segment to -100% prevents ad delivery during that window entirely. This is appropriate for businesses that cannot process leads outside business hours — a single-location law firm or dental practice without an after-hours answering service, for example. The -100% hard exclusion is respected by all Smart Bidding strategies, including Target CPA and Target ROAS. See Google Ads bidding strategies for the full interaction matrix between campaign type and bid strategy controls. MB Adv Agency applies -100% tablet bid adjustments as a standard configuration in lead-generation campaigns, particularly for local service clients where tablet traffic consistently shows higher CPA and lower intent signal quality.
| Adjustment Type | Manual CPC | Smart Bidding (Max Conv. / Target ROAS) | Target CPA Specifically | Practical Implication |
|---|---|---|---|---|
| Location | Respected | Ignored | Ignored | Do not use location modifiers for spend control in Smart Bidding campaigns — use geographic radius and Presence targeting instead |
| Device — general multiplier | Respected | Ignored | Ignored | Device multipliers (+20%, -30% etc.) have no effect under Smart Bidding; the algorithm sets device-level bids autonomously |
| Device — Target CPA modifier | N/A (manual only) | Ignored | Respected — modifies the CPA target per device | Under Target CPA only: a +50% mobile modifier raises the mobile CPA target by 50%; useful for accounts where mobile intent quality is measurably different from desktop |
| Device exclusion (-100%) | Respected | Respected | Respected | The primary device control under Smart Bidding; use -100% tablet exclusion as a standard lead-gen configuration for local service verticals |
| Ad schedule (time-of-day) | Respected | Ignored (except -100%) | Ignored (except -100%) | Time-of-day multipliers do not change Smart Bidding spend patterns; only -100% hard exclusions halt delivery in a given time window |
| Audience | Respected | Ignored | Ignored | Audience bid adjustments in observation mode are absorbed; the algorithm uses audience data as a signal but ignores the manual multiplier |
| Demographics | Respected | Ignored | Ignored | Demographic exclusions (e.g., excluding age groups) are respected; demographic bid multipliers are not under Smart Bidding |
Sources: Google Ads Help, "About bid adjustments"; Bigeye Agency, "Google Ads Bid Adjustments in 2026"; ZATO Marketing, "Bid Adjustments: When They Work, When They Don't".
Similar Audiences: Confirmed Deprecated — What Replaced Them
Similar Audiences no longer exist in Google Ads. They stopped generating new segments on May 1, 2023, and were removed from all campaigns by August 2023. Any campaign strategy that references similar audiences is built on a targeting option that has been unavailable for three years.
The deprecation of Similar Audiences (also referred to as similar segments) followed Google's broader transition away from third-party cookie-based audience expansion. Similar Audiences worked by finding users who shared behavioral characteristics with a seed audience (typically a remarketing list or Customer Match list), using cross-site cookie data to identify the behavioral profile. As cookie-based cross-site tracking became less reliable — and as regulatory frameworks in the EU and California constrained its use — the feature's match quality deteriorated. Google announced the deprecation in late 2022, stopped generating new Similar Audience segments on May 1, 2023, and removed existing Similar Audience segments from all campaigns in August 2023. The removal affected Search, Display, YouTube, and Shopping campaigns simultaneously. Per WordStream, "Google Sunsetting Similar Audiences in 2023" and the official SA360 Help, "Changes to audience targeting: similar audiences", there is no restoration scheduled and no replacement that preserves the exact functionality.
The replacements differ by campaign type. For Display, Demand Gen, and Video campaigns, Google's replacement is optimised targeting — enabled by default on new Display campaigns. Optimised targeting uses Google's real-time signals to expand delivery beyond the declared audience when it identifies users likely to convert, without requiring a seed list to define the expansion boundary. For Search and Shopping campaigns, the replacement is Smart Bidding's signal expansion: broad match keywords combined with Smart Bidding allow the algorithm to reach queries and users beyond the declared keyword set, using conversion history to guide expansion. The net effect is similar — reaching users outside the explicitly defined audience — but the mechanism is entirely different: optimised targeting is an audience-side expansion, while Smart Bidding expansion operates on the bid and keyword side.
Demand Gen lookalike segments are not a rename of Similar Audiences. They are a separate product, introduced after the Similar Audience deprecation, available exclusively in Demand Gen campaigns (not Search, not standard Display). Demand Gen lookalike segments are seeded from Customer Match lists or remarketing lists and use Google's logged-in user graph — not cookie-based cross-site data — to identify similar users. They are substantially more reliable than Similar Audiences were in their final months, but they serve a different placement inventory. Conflating them with Similar Audiences is a practitioner error that persists in agency training materials and vendor presentations as of 2026.
The most consequential residual confusion from the Similar Audience deprecation appears in account audits: inherited accounts where a campaign manager configured Similar Audience targeting in 2022 or early 2023, and the strategy documents still reference it as an active tactic. In every such case, the audience is no longer active — it has been absent from those campaigns for three years. See Google Ads campaign types for the current available audience targeting mechanism by campaign type, and Google Ads bidding strategies for the Smart Bidding expansion mechanism that replaced similar-audience-based Search expansion.
| Topic | Detail |
|---|---|
| Status | Removed — not available in any Google Ads campaign as of 2026 |
| Deprecation timeline | Stopped generating new segments: May 1, 2023. Removed from all campaigns: August 2023. |
| Replacement for Display / Demand Gen / Video | Optimised targeting — enabled by default on new Display campaigns; expands delivery beyond declared audiences based on real-time conversion signals |
| Replacement for Search / Shopping | Smart Bidding signal expansion — broad match + Smart Bidding allows the algorithm to expand to related queries and user clusters without explicit audience definition |
| Demand Gen lookalike segments | Separate product introduced post-deprecation; seeded from Customer Match or remarketing lists; available in Demand Gen campaigns only — not available in Search or standard Display; NOT a rename of Similar Audiences |
Sources: SA360 Help, "Changes to audience targeting: similar audiences"; WordStream, "Google Sunsetting Similar Audiences in 2023"; Search Engine Land.
Observation vs. Targeting Mode: The Setting That Determines Campaign Reach
Observation mode adds an audience to a campaign for data collection and bid adjustment without restricting delivery. Targeting mode restricts delivery to that audience only. For Search campaigns, the wrong mode at the wrong stage leaves budget on the table or shuts out new customers.
Observation mode is the default when adding an audience to a Search campaign. In observation mode, the full keyword-eligible audience enters the auction — the audience layer only determines which segment a user is placed in for reporting and bid adjustment purposes. An advertiser running a Search campaign for a personal injury law firm who adds an In-Market "Legal Services" audience in observation mode will see performance data segmented by whether each converting user was or was not in that segment, but delivery is not restricted to those users. Bid adjustments applied in observation mode are theoretically available but are ignored under Smart Bidding — the algorithm incorporates audience membership as one of many signals without amplifying the manually-specified multiplier.
Targeting mode restricts delivery to the declared audience. A Search campaign with a Customer Match list in targeting mode will only show ads to users who match the uploaded CRM data — new users who have never appeared in the CRM will not see the ads. This is the correct mode for remarketing-only Search campaigns (RLSA used in targeting mode), Customer Match re-engagement campaigns, and suppression use cases where the goal is to prevent a specific audience from seeing an ad. The mode selection determines the entire strategic function of the audience application: observation is for measurement and signal enrichment, targeting is for audience-gated delivery.
The typical campaign lifecycle progression for Search audience strategy is: launch in observation mode → collect 4–8 weeks of segment performance data → evaluate whether a segment shows materially different conversion rates → apply targeting mode only where the data justifies restricting delivery. Applying targeting mode at campaign launch — before conversion data confirms a segment's value — eliminates potential customers from day one without evidence that the exclusion improves performance. Review Google Ads metrics and KPIs for the conversion rate segmentation methodology that informs this decision.
The interaction with Smart Bidding adds a nuance: even in targeting mode, Smart Bidding controls bid levels within the declared audience. Targeting mode restricts which users are eligible; the algorithm then bids dynamically among eligible users based on auction-time signals. This means a Search campaign in targeting mode with a Customer Match audience is still operating under full machine learning bid optimization — the mode change restricts the eligibility pool, not the bidding logic. Pairing targeting mode with the right Google Ads keyword match types — typically exact and phrase match in a remarketing-only Search campaign — prevents the algorithm from expanding query matching into irrelevant intent categories within the restricted audience pool.
| Mode | Delivery Restriction | Best For | Smart Bidding Behavior | Typical Use Case |
|---|---|---|---|---|
| Observation | No restriction — full keyword-eligible audience enters the auction | Data gathering; segment performance measurement | Bid adjustments ignored; audience membership used as a background signal in algorithm | Mid-funnel audiences on Search campaigns to measure segment performance before restricting delivery; standard starting configuration for all new audience additions |
| Targeting | Restricted to declared audience only — ineligible users cannot see the ad | Focused BOFU reach; audience-gated delivery | Audience is a hard constraint the algorithm respects — bid optimization continues within the restricted pool | Remarketing-only Search campaigns (RLSA in targeting mode); Customer Match re-engagement campaigns; suppression (exclude existing customers from prospecting campaigns) |
Display Remarketing vs. Standard Display: Average CTR (2026)
Running local service ads with audiences configured on defaults?
MB Adv Agency audits location targeting settings, audience segment architecture, and Customer Match eligibility on every inherited Google Ads account — typically finding structural targeting errors in the majority of accounts.
Get an Audience Audit →Four Audience Targeting Misconceptions That Persist in 2026
The four misconceptions below appear in inherited accounts, training materials, and vendor pitches with enough consistency to cost measurable budget. Each has a direct, one-setting correction.
1. "Similar Audiences are a targeting option"
The misconception: Similar Audiences (similar segments) are available in Google Ads and can be used to expand reach beyond existing remarketing lists. The reality: Similar Audiences were deprecated in May 2023 and removed from all campaigns in August 2023. They do not exist in the Google Ads interface, cannot be applied to campaigns, and are not generating new segments. Any agency proposal, training document, or competitor strategy that lists "similar audiences" as an active targeting option is using three-year-old documentation. The replacement for Display and Demand Gen is optimised targeting; the replacement for Search is Smart Bidding with broad match. Demand Gen lookalike segments are a separate, newer product — not a rename of Similar Audiences, and not available in Search or standard Display. The correction: remove any reference to Similar Audiences from campaign strategy documents and replace with the relevant replacement mechanism for the campaign type.
2. "Location targeting shows ads to people in my city"
The misconception: setting a geographic target (e.g., "Austin, TX") means only users physically located in Austin will see the ads. The reality: Google's default location setting is "Presence or interest," which includes users who searched about Austin — regardless of where they are located. A user in Chicago searching "roofing contractor Austin" triggers Austin-targeted ads under the default setting, with no intent or ability to hire the contractor. This applies to every campaign type: Search, Display, Shopping, Video, and Performance Max. For roofing PPC services and all local service businesses, this default setting is the most frequently observed waste driver in inherited accounts received by PPC management in Austin. The correction: navigate to Campaign Settings → Locations → Location options, and switch from "Presence or interest" to "Presence."
3. "Ad scheduling controls when Smart Bidding spends"
The misconception: applying ad schedule bid adjustments (e.g., +20% Monday–Friday 9am–5pm, -50% evenings and weekends) controls when Smart Bidding campaigns spend and at what relative rate. The reality: under all Smart Bidding strategies — Maximize Conversions, Maximize Conversion Value, Target CPA, Target ROAS — time-of-day bid multipliers are absorbed and ignored by the algorithm. The algorithm already incorporates time as a bidding signal based on historical conversion patterns. It bids higher during hours it predicts produce better conversions, independent of any manual schedule adjustment. The correction: the only functional scheduling lever under Smart Bidding is the -100% hard exclusion, which halts delivery entirely in a designated time window. Use this to prevent ads during hours the business genuinely cannot process leads — not as a budget pacing tool, which it is not.
4. "Remarketing lists work the same as three years ago"
The misconception: URL-based remarketing lists (tag-based site visitor audiences) work the same way they did in 2022–2023, matching a comparable percentage of site visitors. The reality: Safari's Intelligent Tracking Prevention and Firefox Enhanced Tracking Protection block or severely limit the first-party cookies that power tag-based site visitor remarketing. Safari holds roughly 20% of global browser market share and significantly higher share on mobile-first and B2C verticals. Accounts with high Safari traffic share will see measurable shrinkage in URL-based list sizes over time — not due to lower site traffic, but due to cookie blocking. This affects remarketing list eligibility calculations for Missoula legal PPC accounts and any advertiser targeting professional or consumer audiences with high mobile usage. The correction: for lead-gen clients with a CRM list of more than 500 contacts, Customer Match is now the primary remarketing mechanism — it matches on Google's signed-in user graph with no cookie dependency. Supplement tag-based lists with Customer Match uploads and YouTube engagement lists, which are both cookie-independent.
Audience Targeting Priorities by Vertical
HVAC & Home Services
Switch to Presence targeting immediately. Apply -100% tablet exclusion. Use In-Market + Life Events (moving) as PMax signals. Links: HVAC PPC services · Flagstaff HVAC PPC
Legal & Personal Injury
Customer Match from existing client database for cross-sell / upsell suppression. Observation on In-Market legal audiences to quantify value before restricting to targeting. -100% tablet. Links: legal PPC services · Missoula legal PPC
E-Commerce & DTC
RLSA with +37% CTR uplift on Search. Dynamic remarketing for cart abandonment ($13 CPA). Customer Match for repeat-buyer suppression and Demand Gen lookalike seeding. Links: fashion PPC services · supplements and nutrition PPC
Real Estate
Life Events (moving) + In-Market (real estate) as PMax signals. Customer Match for past inquirers. Presence-or-interest is acceptable — people searching out-of-area genuinely want property info. Link: real estate PPC
Financial Services & Insurance
Customer Match for CRM exclusions (existing policy holders). Detailed Demographics (homeowners, high-income households). Strict audience targeting mode on Search remarketing. Link: financial services PPC
Local Services (Plumbing, Dental)
Presence targeting is non-negotiable. Location radius set to actual service area. -100% tablet. Custom Segments using competitor URLs + service-category search terms. Links: plumbing PPC services · dental PPC services · Missoula plumbing PPC
Frequently Asked Questions: Google Ads Audience Targeting
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Talk to the Team →Methodology
Platform documentation drawn from Google Ads Help (audience segments, Customer Match, advanced location options, bid adjustments, PMax audience signals) and SA360 Help and WordStream for Similar Audiences deprecation confirmation. Search demand data sourced from Ahrefs keyword research, May 2026. CTR and CPA benchmarks from Searchlab Retargeting Statistics 2026, aggregated from Google, Meta, Criteo, and eMarketer. RLSA and dynamic remarketing lift figures from BestPPC 2025. Conversion probability figure from Linear Design 2025. Customer Match API change (April 2026) documented by ALM Corp. Bid adjustment behavior under Smart Bidding cross-referenced against Bigeye Agency and ZATO Marketing analysis. Last updated: June 2026. Reviewed by MB Adv Agency, June 2026.

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