Google Ads audience targeting has evolved dramatically over the past few years. Where advertisers once relied solely on keywords and basic demographics, today’s platform offers sophisticated audience segments that identify users at precise moments in their buying journey. Understanding these audience types and learning how to combine them strategically is essential for anyone serious about maximizing their Google Ads ROI.
This guide covers the four critical audience dimensions that will define your 2025-2026 Google Ads success: in-market audiences that capture active buyers, affinity segments that reach interested prospects, custom segments built from your own data, and combined segments that layer multiple targeting criteria together.
## Understanding In-Market Audiences: Capturing High-Intent Users
In-market audiences represent users who are actively researching or comparing products and services with clear intent to purchase in the near future. Google identifies these users based on recent search queries, product comparisons, website visits, shopping behavior, and other signals that indicate active buying consideration.
Think of in-market audiences as the warm leads of Google Ads: these aren’t people casually browsing the web, but people who have demonstrated measurable purchase intent within a specific category.
### How Google Identifies In-Market Users
Google’s algorithms analyze hundreds of signals to determine if a user belongs to an in-market audience. When someone searches for “best running shoes under $150” or “compare fitness trackers,” Google recognizes these as high-intent queries. Similarly, when users visit e-commerce product comparison pages, read reviews on specialist websites, or spend time on retailer sites browsing checkout pages, these behaviors signal purchase intent.
The platform tracks users across devices and property types. A user who researches on their mobile phone in the morning, compares options on their desktop in the afternoon, and reads reviews on a tablet in the evening will still be identified as in-market for that product category, because Google connects these activities through cross-device tracking.
### In-Market Audience Performance Benchmarks
In-market audiences consistently outperform broad keyword targeting in conversion-focused campaigns. Industry data from 2025 shows that in-market targeting drives conversion rates significantly higher than baseline averages.
**Key Performance Metrics by Industry (2025 Data):**
### For e-commerce and retail sectors, advertisers…
For e-commerce and retail sectors, advertisers targeting in-market audiences for “Sports & Fitness Equipment” report conversion rates ranging from 8% to 14%, compared to the industry average of 7.52%. In the automotive sector, in-market audiences for vehicle repairs and parts achieve conversion rates of 14.67%, the highest among all industries tracked. Travel and hospitality businesses leverage in-market audiences for “hotel and accommodation” targeting to achieve conversion rates of 8.5% to 12%.
The cost per acquisition (CPA) also favors in-market users. Auto industry businesses targeting in-market audiences achieve an average CPA of $33.52, the most cost-effective across all verticals. E-commerce businesses report CPAs between $38 and $52 when focusing on in-market prospects, significantly lower than broader audience approaches.
### Real-World In-Market Campaign Examples
**Sports Equipment Retailer Campaign**: A mid-sized running shoe retailer targeting the “Sports & Fitness Equipment” in-market audience generated 156% higher conversion rates than keyword-only targeting. Their campaign structure included three ad groups: running shoes, fitness trackers, and workout apparel. By limiting ad delivery to users already researching these categories, they reduced wasted impressions by 42% while increasing conversion value by 87%.
**Technology Product Launch**: An electronics retailer launching a new laptop model targeted “Computer & Tablet” in-market users. Their in-market audience campaigns achieved a 9.2% conversion rate versus 2.8% for their brand keyword campaigns. Cost per lead dropped from $18 to $7.50 because the audience was already pre-qualified by purchase intent.
### **Travel Agency Example**: A travel company…
**Travel Agency Example**: A travel company targeting “Hotel & Accommodation” in-market users achieved conversion rates of 11.3% compared to their affinityonly baseline of 3.2%. This threefold improvement came from reaching users actively comparing prices rather than people casually browsing travel inspiration.
## Affinity Audiences: Building Long-Term Interest-Based Relationships
While in-market audiences capture users right now, affinity audiences reach people based on their sustained, long-term interests, hobbies, and lifestyle preferences. Affinity segments identify users based on their broader passions and habits rather than immediate purchase intent.
Google maintains approximately 150 distinct affinity segments covering lifestyle interests, hobbies, entertainment preferences, shopping behaviors, and professional interests. These segments are built from behavioral analysis of browsing history, app usage, location signals, and content consumption patterns over weeks and months.
### The Strategic Difference: Affinity vs. In-Market
The distinction is fundamental: affinity audiences represent “what someone loves,” while in-market audiences represent “what someone is buying right now.”
Consider a fitness enthusiast. An affinity segment captures users who regularly read fitness content, follow athletic brands on social platforms, watch workout videos, and demonstrate sustained interest in health and wellness. This person appears in the “Health & Fitness Enthusiasts” affinity segment regardless of whether they’re currently shopping for fitness products.
### In contrast, if that same person…
In contrast, if that same person searches for “best home gym equipment 2025” and visits product review sites, Google places them in the “Sports & Fitness Equipment” in-market audience because their recent behavior signals active purchase consideration.
The average CTR across all industries for Google Ads is 3.17% for search and 0.46% for display. Affinity-targeted display campaigns typically achieve CTRs of 0.6% to 1.2%, higher than untargeted display campaigns (0.4% average) but lower than in-market or remarketing campaigns.
### Affinity Audience Examples and Applications
Google provides detailed affinity segments across numerous categories:
**Lifestyle Affinity Segments** include “Urban Explorers” (users interested in city culture, dining, nightlife), “Budget Conscious Shoppers” (deal hunters and discount-focused consumers), “Business & Finance Enthusiasts” (users interested in investing, career development, business news), and “Pet Lovers & Owners” (users with sustained interest in pets and pet care).
### **Tech & Early Adopter Segments** include…
**Tech & Early Adopter Segments** include “Technology Enthusiasts” (early adopters following new gadgets), “Gaming Enthusiasts” (console and PC gamers), “Photography & Video Enthusiasts” (camera equipment and content creation interest), and “DIY & Home Improvement” (users passionate about home renovation projects).
### Affinity Campaign Performance Benchmarks
**Content Creators and E-Learning**: Affinity audiences targeting “Tech & Gadget Enthusiasts” for online courses generated a 5.2% conversion rate, higher than the 3.75% search baseline. This worked because users with demonstrated tech interest were more likely to invest in relevant professional development.
**Lifestyle Brand Prospecting**: A premium coffee company targeting “Foodies & Culinary Enthusiasts” with display ads achieved a 2.8% CTR, compared to 0.46% for untargeted display. Their cost per conversion reached $52, making affinity targeting economical for brand awareness and cold prospecting.
### **Fitness Equipment and Supplements**: Retailers combining…
**Fitness Equipment and Supplements**: Retailers combining the “Health & Fitness Enthusiasts” affinity with display remarketing achieved conversion rates of 6.8%, because they reached users with demonstrated interest in fitness who had already seen their product catalogs.
### Best Practices for Affinity Audience Campaigns
Affinity audiences excel at top-of-funnel prospecting and brand awareness. They’re ideal for reaching new customers who haven’t interacted with your brand but fit your ideal customer profile. Don’t expect immediate conversions from affinity audiences in your first week, especially for high-ticket products. Affinity audiences work best on display and video networks where you have creative control to tell brand stories and build interest.
Limit observation to 5-10 affinity segments simultaneously to maintain clear data interpretation. Monitor CTR and cost per engagement metrics, not just conversion rate, since affinity audiences optimize for awareness-stage metrics.
## Custom Segments: Leveraging First-Party Intent Data
Custom segments represent one of the most powerful yet underutilized audience types in Google Ads. These segments allow you to define specific audience groups using your own keywords, URLs, apps, and business logic rather than relying exclusively on Google’s pre-built categories.
On November 25, 2025, Google announced that custom segments were expanding significantly for Display campaigns, making this audience type even more valuable for sophisticated advertisers.
### Building Custom Segments: Keywords, URLs, and Apps
Custom segments start with your own data and business understanding. You specify keywords that indicate purchase intent, website URLs that signal engaged users, and app behavior that predicts conversion likelihood.
**Keyword-Based Custom Segments**: If you’re a B2B software company, you might create a custom segment targeting searches for “project management software pricing,” “asana vs monday comparison,” “gantt chart tools,” and “team collaboration platform features.” Google then matches users searching these terms to your custom audience segment.
### **URL-Based Custom Segments**: E-commerce retailers can…
**URL-Based Custom Segments**: E-commerce retailers can create a custom segment from users who visited their pricing pages, product comparison pages, or competitor websites. For example, visiting “yoursite.com/pricing,” “yoursite.com/compare,” or “competitor.com/products” signals high intent.
**App-Based Custom Segments**: Mobile app marketers can target users who have shown specific in-app behaviors: users who viewed product listings, added items to carts, visited checkout screens, or engaged with premium features.
### Custom Segment Performance Data
Custom segments consistently deliver strong ROI because they’re built on your actual business data rather than Google’s assumptions. Real-world 2025 case studies demonstrate measurable impact:
**E-Commerce Case Study**: A sustainable products retailer created a custom segment from keywords like “eco-friendly products,” “organic clothing,” “zero waste shopping,” and “sustainable packaging.” This targeted customers aligned with their brand values. The custom segment achieved a 10.7% conversion rate and a cost per acquisition of $34, compared to their display baseline of 3.2% conversion rate and $89 CPA.
### **SaaS Lead Generation Example**: A HR…
**SaaS Lead Generation Example**: A HR software company built a custom segment from URL visits to their “pricing,” “customer stories,” “vs-competitor,” and “request-demo” pages. Users matching this segment (having visited 2+ of these pages) converted at 14.2%, compared to 4.8% for their broader HR software search audience.
**Fashion & Apparel Campaign**: A luxury clothing brand created a custom segment from URLs: their own sale pages, competitor luxury retailers, and high-fashion blogs. This audience achieved a 6.5% CTR on display ads (versus 0.7% untargeted) and a 9.3% conversion rate on landing pages.
### Custom Segment Expansion in 2025
Google’s expansion of custom segments for Display campaigns (effective December 2025) significantly broadens their utility. Previously, custom segments were primarily available for Search campaigns. The Display expansion enables:
– Reaching custom audiences on partner websites and apps
### – Building awareness campaigns with highly…
– Building awareness campaigns with highly qualified audiences
– Cross-device targeting of users who demonstrate specific behaviors
### – Testing custom segment performance at…
– Testing custom segment performance at scale before committing to conversion campaigns
## Combined Segments: Multiplying Audience Precision
Combined segments represent the advanced evolution of audience targeting. Rather than choosing a single audience type, combined segments let you layer multiple criteria together using logical operators: AND (users must match all criteria), OR (users matching any criteria), or NOT (excluding specific user groups).
Google identifies a combined segment as “an audience of people who match multiple audience targeting requirements.”
### Strategic Use Cases for Audience Combination
**In-Market + Affinity Combination**: The most common and effective combination layers high-intent users with demonstrated interest. A fitness equipment retailer combining “Sports & Fitness Equipment” (in-market) AND “Health & Fitness Enthusiasts” (affinity) captures users actively shopping for fitness products who also demonstrate sustained interest in fitness content and communities.
This combination delivers superior performance: users must show both purchase intent signals (recent fitness equipment research) AND long-term interest alignment (established fitness engagement). The result is a smaller but far more qualified audience.
### **Performance Data**: A sporting goods retailer…
**Performance Data**: A sporting goods retailer using this combination achieved a 16.8% conversion rate, compared to 8.4% for in-market alone and 3.2% for affinity alone. Cost per acquisition dropped to $28 (in-market alone: $45, affinity alone: $78) because the combined audience eliminated users without true buying intent despite interest alignment.
**In-Market + Custom Segment Combination**: B2B companies frequently combine in-market audiences with custom segments built from competitor website visits and industry research keywords.
### A cybersecurity software company combined “Security…
A cybersecurity software company combined “Security Services” (in-market) AND a custom segment of users visiting competitor websites plus searching “zero-trust architecture,” “endpoint detection,” and “security incident response.” This combination achieved a 12.5% conversion rate and $1,250 CPA, compared to $2,100 CPA for in-market alone, because the custom data filtered for users with specific security priorities.
**Affinity + Remarketing + NOT Demographics**: Luxury brands use sophisticated combinations to reach interested users while excluding poor customer fits.
### A luxury watch brand combines “High-End…
A luxury watch brand combines “High-End Shoppers” (affinity) AND users who visited their website in the past 90 days (remarketing) NOT users in the “budget conscious shoppers” demographic. This 3-layer combination dramatically reduced wasted spend on price-sensitive users while maintaining awareness among warm prospects with demonstrated luxury interest and brand familiarity.
### Building Effective Combined Segments
Start with your primary conversion driver: usually in-market audiences for immediate sales or custom segments for qualified leads. Add one additional layer (affinity or remarketing) to improve conversion rate. Test combinations with observation mode for 2-4 weeks before applying bid adjustments.
Never combine more than 3-4 audience criteria. Each additional layer shrinks your audience size; excessive complexity creates audiences too small for Google’s algorithms to optimize effectively.
### **Audience Size Considerations**:…
**Audience Size Considerations**:
– In-market alone: typically 1-3 million users (broad)
### – In-market AND affinity: typically 100,000-500,000…
– In-market AND affinity: typically 100,000-500,000 users (medium)
– In-market AND affinity AND custom segment: typically 10,000-100,000 users (targeted)
### Google requires sufficient audience size (minimum…
Google requires sufficient audience size (minimum 1,000 users) to optimize bidding. Combined segments must maintain reasonable scale.
## Performance Benchmarks Across Audience Types (2025 Data)
Understanding how different audience types compare helps with strategic prioritization:
**Conversion Rate Benchmarks by Audience Type:**
### – In-Market audiences: 7.2% – 14.7%…
– In-Market audiences: 7.2% – 14.7% (best converters)
– Combined segments (in-market + affinity): 9.5% – 16.8%
### – Custom segments: 8.2% – 14.2%…
– Custom segments: 8.2% – 14.2%
– Affinity audiences: 2.8% – 5.2%
### – Broad keyword targeting: 2.1% -…
– Broad keyword targeting: 2.1% – 3.8%
**Cost Per Acquisition Benchmarks:**
### – Combined segments: $22 – $45…
– Combined segments: $22 – $45
– In-market audiences: $33 – $65
### – Custom segments: $28 – $55…
– Custom segments: $28 – $55
– Affinity audiences: $45 – $120
### – Broad targeting: $55 – $150+…
– Broad targeting: $55 – $150+
**Click-Through Rate (CTR) Benchmarks:**
### – Combined segments + display: 1.2%…
– Combined segments + display: 1.2% – 2.8%
– In-market on search: 4.5% – 7.2%
### – Custom segments on display: 0.9%…
– Custom segments on display: 0.9% – 1.8%
– Affinity audiences on display: 0.6% – 1.2%
### – Untargeted display: 0.46%…
– Untargeted display: 0.46%
## Campaign Structure Best Practices
Successful audience-driven Google Ads accounts structure campaigns strategically:
**Separate In-Market and Affinity Campaigns**: Never combine in-market and affinity audiences in the same campaign. They require different bidding strategies, messaging, and landing pages. In-market campaigns should emphasize product features, pricing, and immediate availability. Affinity campaigns should emphasize lifestyle benefits, community, and brand story.
### **Dedicated Custom Segment Campaigns**: Build separate…
**Dedicated Custom Segment Campaigns**: Build separate campaigns for each custom segment to maintain performance visibility and allow custom bidding strategies. A B2B company might create one campaign for website visitors and another for keyword-researched prospects.
**Layered Bidding Strategies**: In-market audiences can support higher bids because their conversion probability is high. Affinity audiences require conservative bids since they’re awareness-stage. Combined segments support moderate bids since audience quality is high but audience size is limited.
### **Testing Architecture**: Google recommends using observation…
**Testing Architecture**: Google recommends using observation mode for new audiences before applying bid adjustments. Create your audience segments, add them to campaigns in observation mode for 2-4 weeks, then analyze performance data before optimization.
## Integration with Google’s AI and Automation
Google continues emphasizing AI-enhanced targeting in 2025, but sophisticated advertisers maintain audience control. WordStream research shows that advertisers seeing the strongest long-term results strengthen their first-party data foundations rather than relying exclusively on broad AI targeting.
The optimal 2025 strategy combines:
### – **Precise audience definition** using in-market,…
– **Precise audience definition** using in-market, affinity, and custom segments
– **AI optimization** through Performance Max and automated bidding
### – **First-party data** from GA4 audiences,…
– **First-party data** from GA4 audiences, customer match, and enhanced conversions
– **Control mechanisms** that prevent over-broad targeting while allowing algorithm optimization
### This balanced approach respects Google’s machine…
This balanced approach respects Google’s machine learning capabilities while maintaining advertiser control over audience strategy and brand safety.
## Common Mistakes to Avoid
**Audience Overlap Without Intent**: Combining audiences with OR logic when you should use AND logic creates audiences that are too large. Only use OR when deliberately expanding reach (e.g., targeting “finance enthusiasts” OR “business professionals” for a B2B product).
**Ignoring Audience Size**: Building excessively specific combined segments (3-4 criteria) creates audiences too small for effective optimization. Monitor audience size in your account.
### **Static Audience Lists**: Never set an…
**Static Audience Lists**: Never set an audience and ignore it for months. Affinity and in-market segments change seasonally. Monitor performance monthly and adjust bidding accordingly.
**Underutilizing Custom Segments**: Many advertisers overlook custom segments because they require manual definition. Building 3-5 custom segments based on your actual user behavior dramatically improves performance.
### **Excessive Observation Mode**: While observation mode…
**Excessive Observation Mode**: While observation mode is valuable, staying in observation mode too long delays optimization. Transition to bidding adjustments after 2-4 weeks of data.
## Implementation Checklist for 2025-2026
1. Audit your current audience segments. Are you using in-market audiences? Custom segments? Combined segments?
2. Build your first custom segment from keywords representing high-intent research in your category.
### 3. Create a test campaign combining…
3. Create a test campaign combining an in-market audience with one affinity segment relevant to your product.
4. Monitor performance for 3-4 weeks in observation mode before applying bid adjustments.
### 5. Compare conversion rate and CPA…
5. Compare conversion rate and CPA across audience types and document results.
6. Build your second custom segment from top-converting keywords or high-value website pages.
### 7. Create combined segments for your…
7. Create combined segments for your highest-performing audience combinations.
8. Review audience performance monthly and retire underperforming segments.
## Conclusion: Audience Strategy as Competitive Advantage
Google Ads audience targeting has matured significantly. The advertisers winning in 2025-2026 aren’t those relying on broad keyword targeting or trusting Google’s automation exclusively. They’re practitioners who understand the strategic differences between in-market audiences that capture immediate demand, affinity segments that build long-term relationships, custom segments that leverage first-party data, and combined segments that multiply precision.
Your audience strategy directly determines your cost per acquisition and return on ad spend. Spending the time to understand these audience types, build proper account structure, and test combinations isn’t complexity for its own sake: it’s the foundation of profitable growth.
### Start with in-market audiences and custom…
Start with in-market audiences and custom segments for immediate impact, add affinity segments for prospecting, then combine them strategically as your audience data matures. This progression moves you from basic targeting to a sophisticated, data-driven audience strategy that delivers measurable competitive advantage.
## Sources and References
– Google Ads Audiences Help
– About Affinity Segments – Google Ads Help
### – WordStream Google Ads Benchmarks 2025…
– WordStream Google Ads Benchmarks 2025
– Google Ads Audience Segments Guide – Easy Insights
### – Search Engine Journal – Google…
– [Search Engine Journal – Google Ads CTR Benchmarks
– Google Ads Targeting Best Practices – jyll.ca
### – Google Ads Custom Segments Expansion…
– [Google Ads Custom Segments Expansion – PPC Land
– Affinity Audiences Guide – Store Growers
### – Google Ads Performance Max Guide…
– [Google Ads Performance Max Guide 2025 – DataSlayer
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