Advertising · · 3 min read
Google Ads account structure — how to organise campaigns for performance that scales
Poorly structured Google Ads accounts are one of the most common causes of wasted spend. Here's how to build an account structure that performs and is maintainable as it grows.
By Mediseo
The way you structure a Google Ads account determines how much control you have over where your money goes, how clearly you can see what's working, and how efficiently the algorithm can optimise.
Most small and medium business accounts have structural problems that cap their performance. Here's what good structure looks like and why it matters.
Why structure matters
Google Ads runs on data. Conversion data tells the algorithm which keywords, audiences, placements, devices, and bidding adjustments produce the outcomes you want. When your account is properly structured, conversion data aggregates at the right level — campaigns and ad groups contain enough volume for the algorithm to make good decisions.
When the account is poorly structured — too many ad groups with too few conversions, too many campaigns competing for the same queries — the algorithm has fragmented data and makes fragmented decisions. You pay more for worse results.
The other structural benefit: clarity. When campaigns are logically organised, it's easier to identify what's performing, what's not, and where to allocate budget.
The campaign > ad group > ad hierarchy
Campaigns control budget, geographic targeting, network targeting (Search vs. Display vs. Shopping), and bid strategy. Everything in a campaign shares its budget. Structure campaigns around things that need different budgets or targeting settings.
Ad groups contain keywords and ads. Keywords in the same ad group should be closely related enough that a single set of ads is highly relevant to all of them. If you need significantly different ad copy, it's usually a different ad group.
Ads (now "assets" in responsive search ads) contain the actual headline and description combinations. Each ad group should have 2–3 responsive search ads with varied messaging.
Common structural mistakes
One campaign for everything. All keywords in one campaign with one budget. When the campaign's daily budget runs out, all keywords stop showing simultaneously — you have no control over which keywords get budget priority.
Too many single-keyword ad groups (SKAGs) with too little data. The SKAG model (one keyword per ad group) was popular in the early 2010s when manual bidding meant tighter control was valuable. In 2026, with automated bidding dominant, SKAGs fragment data below the threshold where Smart Bidding can optimise. 5–15 closely related keywords per ad group is usually better.
Broad match keywords without audience signals or sufficient conversion data. Broad match can work well and often does with Smart Bidding — but it needs conversion data to work. An account with fewer than 50 conversions per month running primarily broad match is giving the algorithm too little to work with.
Brand and non-brand keywords in the same campaign. Brand keywords (your company name, your product name) convert at much higher rates and much lower CPCs than non-brand keywords. Mixing them inflates campaign averages and distorts what you're seeing. Separate campaigns for brand vs. non-brand are standard practice.
A practical structure for service businesses
For a service business running search campaigns:
Campaign 1: Brand keywords Budget: low (brand searches are cheap), high conversion rate expected Keywords: company name, domain name, brand variants
Campaign 2: Core service keywords — exact/phrase match Budget: main budget, tightest control Keywords: your primary services with specific intent ("digital marketing agency Málaga", "web development for small businesses", "Google Ads management")
Campaign 3: Competitor and category keywords — broader Budget: secondary, discovery function Keywords: competitor names, broader category terms, problem-based keywords ("how to improve my website traffic")
Campaign 4: Remarketing (Display/Search) Budget: smaller, focused on past visitors Audiences: site visitors, past converters for upsell
This structure gives you budget control at the right level, allows data to aggregate within each campaign, and keeps your performance data readable.
Negative keywords: the ongoing maintenance
Negative keywords prevent your ads from showing for irrelevant searches. They're one of the highest-impact ongoing maintenance tasks in a Google Ads account.
Every week, check the Search Terms report. For every irrelevant or non-converting term that triggered your ads, add it as a negative at the ad group or campaign level. Over time, a well-maintained negative keyword list significantly reduces wasted spend.
Common negative keyword categories for service businesses: job seekers ("how to become a...", "salary", "jobs"), students ("course", "tutorial", "free"), and competitors you don't want to mention.
Google Ads structure and ongoing management is part of our advertising service. If your current campaigns are structured poorly or you're not sure whether your spend is going where it should, book a call and we'll audit what you have.