The unique ID number of the adUsed to structure your ads, keywords (for search campaigns) and targeting (for GROUP) campaignThe top-level structure of your account, think of campaigns as folders within your account. You can create one or more campaigns inside your account based on your advertising objectives. There are multiple ways to structure your campaigns, for example, you can use campaigns for different targeting (search vs. display), for structuring keywords, allocating budget and more. Each campaign contains one or more ad groups to create a more granular structure inside your account. See also ad group.... Always-R Glossary you’re viewing in reporting. Your campaign contains ad sets and ads.