Structuring Google Ads ad groups correctly is one of the highest-leverage moves an affiliate can make. Each ad group should contain keywords that share the same search intent, paired with ads and a landing page that match that intent exactly — and Google rewards that alignment with lower CPCs and better ad placement.
Ad Group: a container inside a Google Ads campaign that groups related keywords, ads, and a destination URL. The tighter the relevance between keyword → ad → landing page within a group, the higher the Quality Score — and the lower the cost per click.
Why ad group structure has such a big impact on results
Google's Quality Score is calculated at the keyword level using three factors: expected click-through rate (CTR), ad relevance, and landing page experience. When a keyword sits in a group with unrelated ads and a generic landing page, all three factors drop — and your CPC rises to compensate. Affiliates who mix different search intents in the same ad group end up paying more per click and converting less.
How to structure Google Ads ad groups for affiliates: SKAG vs. thematic groups
There are two main approaches affiliates use to organize ad groups in Google Ads:
SKAG (Single Keyword Ad Group)
Each ad group contains one core keyword (in exact, phrase, and broad match modifier). You write ads that are ultra-specific to that keyword and send traffic to a landing page optimized for it. The result is maximum Quality Score, higher CTR, and lower CPC. Best for niches with a small set of high-volume terms.
Thematic ad groups
Groups 5 to 10 keywords with the same search intent. Easier to manage and works well when keywords are close variations of each other (e.g., 'weight loss supplement', 'fat burner supplement', 'supplement to lose weight'). One set of ads covers all of them naturally and the landing page satisfies the group's intent.
- Only group keywords with the same purchase intent in the same ad group
- Use descriptive group names (e.g., 'Nutra — Weight Loss — Exact')
- Create at least 3 ad variations per group for A/B testing
- Point each group to a landing page that reflects the group's keyword theme
- Add group-level negative keywords to prevent overlap between ad groups
- Review the search terms report weekly to refine keywords and negatives
Classic mistake: mixing top-of-funnel and bottom-of-funnel keywords in the same group. 'what is supplement X' and 'buy supplement X' have opposite intents. Mixing them dilutes Quality Score and generates non-converting clicks that eat your budget.
How AdsCreator helps you structure ad groups and write better ads
AdsCreator, part of the AdsX platform, generates complete campaign structures with ad groups separated by intent. For each group, it creates multiple headline and description variations with the keyword inserted naturally — in over 50 languages. This eliminates hours of manual work and ensures every ad is relevant to its group's keyword from day one, pushing Quality Score higher from the first impression.
Affiliates who reorganize campaigns into intent-specific ad groups and use AdsCreator for ad copy report an average 30% reduction in CPC and a 25% increase in CTR within the first two weeks.
Frequently asked questions about Google Ads ad groups
How many keywords should I have per ad group?
For affiliates starting out, 5 to 10 keywords per thematic group is the sweet spot. If you already have conversion data, consider the SKAG model with 1 to 3 keywords per group to maximize relevance and Quality Score.
Can I use the same landing page across multiple ad groups?
Technically yes, but it's not recommended. Google evaluates the relevance between each group's keyword and the content of the destination page. Using the same page for groups with different intents lowers the Quality Score across all of them. The best practice is to create landing page variations aligned to each intent.
How do I prevent two ad groups from competing against each other?
Add the keywords from each group as negatives in the other relevant groups. This prevents auction overlap and ensures each click goes to the most relevant group, preserving the Quality Score for each one.
Do ad groups affect ROAS?
Yes, indirectly. Well-structured groups increase CTR and lower CPC, meaning more qualified clicks for the same budget. With landing pages specific to each intent, conversion rates also improve — and ROAS rises as a result.
Conclusion
Structuring ad groups by search intent is one of the most effective levers for lowering CPC and increasing conversions on Google Ads. Combine intent-matched keywords, specific ads, and aligned landing pages — and use AdsCreator to automate relevant ad copy for every group without spending hours on manual editing.
Create perfect ads for every ad group in seconds
AdsCreator generates headlines, descriptions, and campaign structures with AI — in over 50 languages. Essencial and Escala Max plans.