Most Google Ads search accounts I review have the same structural problem: ad groups that look differentiated on paper but are functionally identical. Same headlines, same landing page, keywords that only differ by a word order. The algorithm ends up treating them as one big bucket, and you lose the one lever search campaigns actually give you - the ability to match intent precisely.
Here's a practical way to structure ad groups so they genuinely differ, with examples you can adapt.
Start from intent, not from product
The instinct is to build ad groups around your product catalog or service list. That's a reasonable starting point, but it's not enough. Within one product or service, searchers show up with different intent, and that intent should drive the split - not the taxonomy of your website.
Take a plumbing company. "Emergency plumber" and "plumbing quote" both relate to plumbing services, but they are different buyers at different moments. One wants a phone call in the next ten minutes. The other is comparing options for next week. If both sit in the same ad group with the same ad copy and the same landing page, you're writing one message for two different urgencies, and it will underperform for at least one of them.
Three ways to split ad groups that actually create difference
Intent stage: research ("what is ppc"), comparison ("best google ads agency"), and transactional ("hire ppc freelancer") keywords get separate ad groups, separate ad copy, and ideally separate landing pages. The research group can point to a guide; the transactional group should point straight to a contact form or pricing page.
Modifier theme: "same day", "emergency", "24 hour" versus "affordable", "cheap", "best price" versus "commercial", "residential". These modifiers signal different priorities (speed vs. cost vs. use case), and each deserves ad copy that speaks to that specific priority instead of a generic headline trying to cover all three.
Geography or vertical, when it changes the offer: if your service or pricing genuinely differs by city or industry, split there. If it doesn't, resist the urge - geo-splitting campaigns that have identical offers everywhere just multiplies management overhead without multiplying relevance.
What these three have in common: the split only earns its keep if the ad copy and landing page change with it. An ad group split that doesn't change the message is just extra admin work.
A concrete example
For a PPC freelancer marketing their own services, instead of one ad group with keywords like "ppc freelancer", "ppc expert", "ppc specialist", "hire ppc manager", split by what the searcher is trying to solve:
- Ad group "PPC audit": keywords like "google ads audit", "ppc account review" - ad copy offers a free audit, landing page is a short audit request form.
- Ad group "PPC management": keywords like "hire ppc manager", "outsource google ads management" - ad copy emphasizes ongoing management and results, landing page is a case study plus a call booking link.
- Ad group "PPC for [niche]": keywords like "google ads for ecommerce", "ppc for saas" - ad copy speaks directly to that vertical's pain points, landing page shows relevant proof for that niche.
Each group has a distinct searcher problem, a distinct message, and ideally a distinct landing experience. That's the test for whether a split is worth making: can you write an ad for this group that would feel wrong in the other group? If yes, it's a real split. If you'd reuse the same headline, it isn't.
Keep the keyword list tight enough to stay coherent
A good sanity check: read the keyword list in an ad group out loud and ask whether one single headline could honestly answer all of them. If the list spans too many intents, the headline ends up generic to cover everyone, which is the exact problem you're trying to avoid. Tighter ad groups with fewer, closely related keywords consistently produce better Quality Score and CTR than broad ad groups that try to be everything.
This also makes negative keywords easier to manage - when ad groups are built around distinct intent, it's obvious which negatives belong where, instead of trying to carve exceptions out of one sprawling group.
Where this breaks down
Small accounts don't need twenty micro ad groups. If your monthly search volume is low, over-splitting starves each ad group of data and makes optimization slower, not faster. The goal is differentiation that matters, not maximum granularity. Split where the message genuinely changes; merge where it doesn't.
Closing
This structure - and the keyword research and asset grouping behind it - is exactly what I work on day to day, so I built a tool around it. I'm from AdeptAds: it generates a full Google Ads campaign structure (ad groups, keyword themes, and draft ad copy) from your business inputs and market research, in multiple languages, with a PPC specialist reviewing before anything goes live. If you want to see how it splits ad groups for your own business, try it here: https://www.adeptads.ai/google-ads-campaign-generator?utm_source=devto&utm_medium=community&utm_campaign=growth-root-208
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