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Google Ads added an auto-apply setting to experiments. It’s on by default, so winning variants can go live without review.
How it works. You choose directional results (default) or statistical significance at 80%, 85%, or 95% confidence. One safeguard: if your chosen success metric performs significantly worse in the test arm, the change won’t auto-apply.
Why we care. Experiments are one of the most powerful tools in your account. Automating apply can speed testing, but removes a checkpoint where you catch unintended consequences before they hit live campaigns.
The catch. Experiments allow only two success metrics. A third metric you care about — one you didn’t or couldn’t select — can decline unnoticed. Guardrails protect what you told Google to watch, not everything that matters.
Bottom line. Auto-apply is a reasonable shortcut for simple tests. For anything consequential, keep manual review. Run the experiment, reach significance, then review full data before you apply changes.
First seen. Google Ads specialist Bob Meijer shared this update on LinkedIn.
