You want to compare a manual bidding strategy against an omni channel Smart Bidding campaign. Which method would help you test this strategy?

In the context of Google Ads, Campaign Experiments is the correct method for testing this strategy because it allows for a controlled, A/B testing environment where a single campaign's traffic is split between a "control" group (manual bidding) and a "trial" group (omnichannel Smart Bidding). This rigorous scientific approach ensures that the performance comparison is based on the same auction conditions, timeframes, and audience segments, providing a clear and statistically significant measure of how much a Smart Bidding strategy—which incorporates offline signals like store visits—actually improves results compared to manual optimization.