Verify that Search, Display, Shopping, Video, and Performance Max campaigns are never mixed in ways that compromise optimization signals.
Ensure branded and non-branded keywords live in separate campaigns with independent budgets and targets.
Audit naming conventions across all campaigns, ad groups, and labels for a standardized taxonomy.
Evaluate whether each ad group contains tightly themed, closely related keywords (ideally 5-20 per group).
Segment and analyze Search Partners performance separately from Google Search.
Check whether Search campaigns have inadvertently opted into the Google Display Network.
Audit all campaign-level settings including location targeting method, start/end dates, and network settings.
Verify that campaigns, ad groups, keywords, and ads are properly labeled for segmentation, reporting, and automated rule targeting.