Why Campaign Structure Matters
The way you structure your Google Ads account has a direct impact on your Quality Scores, ad relevance, and overall performance. A well-organized account makes it easier to manage bids, write targeted ad copy, and diagnose problems. A messy account leads to wasted spend and missed opportunities.
Google Ads has three levels of hierarchy you need to understand: Campaigns → Ad Groups → Ads & Keywords.
The Three Levels Explained
1. Campaigns
A campaign is the top-level container. It controls the most important settings:
- Budget (daily spend limit)
- Bidding strategy (Target CPA, Maximize Conversions, Manual CPC, etc.)
- Network (Search, Display, Shopping, Video)
- Geographic targeting and language settings
- Ad scheduling (days and hours your ads run)
A common approach is to create separate campaigns by product category, service type, or geographic region so each has its own budget and settings.
2. Ad Groups
Ad groups live inside campaigns and group together a set of closely related keywords with a shared set of ads. Each ad group should focus on a single theme. For example, a shoe retailer might have separate ad groups for "running shoes," "trail shoes," and "basketball shoes."
Keeping ad groups tightly themed ensures your ads are highly relevant to the keywords being searched — which improves Quality Score and CTR.
3. Ads and Keywords
Inside each ad group, you write ads and assign keywords. The keywords trigger your ads; the ads convince users to click. Both should speak the same language: if your ad group targets "affordable plumber London," your ad copy and landing page should feature those exact concepts.
A Practical Structure Example
| Level | Example |
|---|---|
| Campaign | Plumbing Services – London |
| Ad Group 1 | Emergency Plumber |
| Ad Group 2 | Boiler Repair |
| Ad Group 3 | Blocked Drains |
| Keywords (Ad Group 1) | "emergency plumber london", "24 hour plumber" |
| Ads (Ad Group 1) | Headline: "Emergency Plumber London – Available 24/7" |
SKAGs vs. Themed Ad Groups
For years, many PPC managers used Single Keyword Ad Groups (SKAGs) — one keyword per ad group — for maximum control and relevance. However, as Google's match types have evolved, this approach has become harder to maintain.
Today, most practitioners prefer tightly themed ad groups with 5–15 closely related keywords. This balances relevance with practicality and works better with Smart Bidding algorithms that need sufficient data to optimize.
Tips for a Strong Structure
- Mirror your website: Structure campaigns and ad groups to reflect your site's navigation or product categories.
- Separate brand and non-brand: Always keep branded keywords (your company name) in a separate campaign with its own budget.
- Use negative keywords: Add negatives at the campaign and ad group level to prevent irrelevant searches from triggering your ads.
- Label everything clearly: Use consistent, descriptive naming conventions so anyone can understand your account at a glance.
- Don't over-complicate it: Start simple. A clean, logical structure beats an overly complex one you can't manage effectively.
When to Restructure
Consider restructuring your account if you notice: declining Quality Scores, poor ad relevance ratings, difficulty controlling spend at a granular level, or if your business offering has significantly changed. Restructuring takes time, but the long-term gains in performance are usually worth it.