What are ad rotation settings and when should you choose 'Rotate indefinitely' or 'Optimize'?

• A. Rotate indefinitely is for testing; Optimize prioritizes high performers.
• B. Rotation options determine ad formats.
• C. Rotate indefinitely always prioritizes high performers.
• D. Rotation options determine how often ads are served.

Answer: (D)

Ad rotation settings control how Google serves multiple ads within an ad group, deciding how often each ad is shown. They affect delivery frequency and exposure, not the ad formats themselves.

Rotate indefinitely means ads are served more evenly over time, which is helpful when you’re testing different creatives and want each one to have equal exposure. Optimize uses past performance to show higher-performing ads more often, with the goal of maximizing results.

Other options aren’t about delivery frequency or testing as described here, and indefinite rotation isn’t about always prioritizing top performers—it’s about giving every ad a fair chance during testing, while Optimize deliberately prioritizes the best performers.