PPC campaigns are organized into a three-level hierarchy: campaigns, ad groups, and individual ads. At the campaign level, the advertiser sets the overall budget, geographic targeting, and the network where ads will appear (search, display, or both). Each campaign contains one or more ad groups, which cluster related keywords together. Individual ads sit within ad groups and contain the specific headlines, descriptions, and destination URLs that users see.
The most important structural decision is keyword grouping. Tightly themed ad groups, where every keyword in the group is closely related, allow for ad copy that is highly specific to the user’s search query. Relevance between keyword, ad, and landing page is the primary driver of Quality Score, which affects both ad position and cost-per-click. Loosely organized ad groups with generic copy consistently underperform tightly structured, theme-specific ones.
Campaign structure should also reflect business priorities. Budgets should be allocated toward campaigns targeting the highest-value keywords, with separate campaigns for branded terms, competitive terms, and general service or product categories. This separation allows different bidding strategies, budgets, and messaging for each intent type rather than treating every search query the same regardless of how far the searcher is from a decision.
