The Google Ads API is most useful when it supports a repeatable operating workflow instead of becoming a vague promise about automation.
For CampaignBench, the practical use cases are straightforward. The API can support reporting pulls, recurring account reviews, pacing checks, and structured QA before or after campaign changes. That keeps performance work tied to a documented review rhythm rather than one-off screenshots and memory.
The account scope is also straightforward. Work is limited to accounts that are directly owned or explicitly authorized for management. That boundary matters because it defines what kind of reporting, troubleshooting, and campaign work should happen in the first place.
When the workflow is healthy, the API is not the headline. The headline is that each account has a clearer review loop, cleaner change tracking, and less operational ambiguity.