Google Ads Campaign Structure: How to Set It Up So It Actually Works

The three levels: campaigns, ad groups, and ads

Google Ads has three structural levels. Understanding what each controls is the foundation of a logical account:

• •Campaign: Where you set budget, geographic targeting, bidding strategy, and network settings (Search, Display, Shopping, etc.). Think of each campaign as a budget bucket.
• •Ad group: Where keywords live alongside the ads they trigger. An ad group should contain keywords that share a single clear theme — so the same ad is relevant to every keyword in the group.
• •Ads: The individual headlines, descriptions, and URLs shown to searchers. Google Ads uses Responsive Search Ads (RSAs) — you provide up to 15 headlines and 4 descriptions, Google mixes and matches them.

Structure decisions flow downward: campaign controls budget and targeting, ad group controls relevance, ads control messaging.

How to decide what deserves its own campaign

Create separate campaigns for:

• •Separate services or product categories: Each service has different commercial value, CPA targets, and potentially different landing pages. Mixing them in one campaign means your budget doesn't discriminate between high-value and low-value clicks.
• •Different geographic targets: If you're running campaigns for Perth and Sydney with different CPAs and competition levels, separate campaigns let you control budgets independently.
• •Different networks: Search and Display should almost always be separate campaigns. Their cost structures, audience types, and optimisation levers are completely different.
• •Brand vs non-brand: Branded keywords (your business name) typically have very high conversion rates and low CPCs. If mixed with non-brand, they skew your overall data and make it harder to see the true performance of your prospecting campaigns.

The SKAG debate — and what actually works

Single Keyword Ad Groups (SKAGs) — where each keyword gets its own ad group — were a popular structural approach for years. The logic was tight relevance between keyword and ad. The reality in 2026 is that Google's matching has become too broad for SKAGs to work as intended, and the management overhead is significant.

The better modern approach is tightly themed ad groups: 3-8 closely related keywords sharing a single clear intent, with ads written for that specific theme. This balances relevance with manageability.

Match types: broad, phrase, and exact in 2026

Keyword match types control how precisely a search query has to match your keyword to trigger your ad. Google has expanded broad match significantly — it now matches to queries that are semantically related, not just similar in wording. This creates more volume but also more irrelevant traffic.

• •Exact match [keyword]: Ad only shows when the query is the same as or very close to your keyword. Highest relevance, lowest volume. Use for your most commercially valuable, highest-converting keywords.
• •Phrase match "keyword": Ad shows when the query contains the meaning of your keyword. A reasonable balance for most service keywords. Phrase match has become slightly broader than it used to be.
• •Broad match keyword: Ad shows for queries Google considers semantically related. Can surface valuable queries you hadn't thought of, but also generates waste. Only worth using with Smart Bidding and strong conversion data — broad match without conversion data is usually expensive noise.

For most Australian SMEs starting out, a combination of exact and phrase match for known high-value keywords is the right starting point. Review the search terms report weekly and add negatives for irrelevant queries.

Negative keywords: the most underused structural tool

Negative keywords tell Google what searches not to show your ads for. They're as important as your positive keywords — and most accounts have too few of them.

For an Australian service business, standard negative keyword categories to add from day one:

• •Job-related: "jobs", "careers", "how to become a", "salary", "apprenticeship"
• •DIY/free: "free", "how to", "DIY", "yourself", "template"
• •Non-commercial research: "what is", "definition", "history of" (for most service campaigns)
• •Competitor brand names: Unless you're deliberately running competitor campaigns
• •Irrelevant geographies: If you're Perth-only, add Sydney, Melbourne, Brisbane, and other major cities as negatives to avoid broad match bleed

Negative keyword lists added at the campaign level apply to all ad groups in that campaign. Build shared negative lists for common themes and apply them across campaigns.

A simple structure for an Australian service business

For a typical Australian trade or professional service business running Google Search Ads, a clean starting structure looks like:

• •Campaign 1 — [Primary Service] — Perth: Exact and phrase match keywords for your core service. Target CPA or Maximise Conversions bidding. Dedicated landing page.
• •Campaign 2 — [Secondary Service] — Perth: Same approach for a second service with different commercial value.
• •Campaign 3 — Brand: Your business name and close variants. Low bids needed, very high conversion rate. Keeps competitors from showing when people search for you by name.
• •Campaign 4 — Competitor (optional): Targeting competitor brand names. Higher CPCs, lower conversion rates, but can intercept prospects in the consideration phase.

Within each campaign, 3-6 ad groups organised by intent theme. Each ad group has 1 RSA and 1-2 variations to test. Review search terms weekly, add negatives, and let Smart Bidding optimise bids once you have 30+ conversions per month.