AdWords Campaign Experiments tool makes it easier to test and precisely measure the impact of changes to your keywords, bids, ad groups, placements - and now ads themselves! ACE allows you to run experimental changes on a percentage of your AdWords traffic. You can compare statistics for experiment versus control traffic and receive statistically significant results, which tell you with confidence whether your experimental changes improved your performance.
You can run ad experiments on both text and display ads. Here're some of the components you can test with each:
You can test text ads against other text ads and display ads against other display ads, but ACE allows you to do more. If your ads are opted into Google Display Network, you can also compare performance of your text ads to that of your display ads on GDN sites. If you don't already have display ads in your account, they're easy to create with display ad builder located within AdWords.
What about ad rotation? The main difference between ACE and ad rotation is that ACE allows you to decide the percentage of traffic on which you want your experiment to run - giving you more control over which ads show when. Within each split, ACE will respect the "optimize" or "rotate" ad rotation settings you've set in your campaign settings tab.
Here're the videos to help you:
Step 1: Setting your experiment parameters:
Step 2: Defining your experimental changes:
Step 3: Monitoring your experiment:
Step 4: Applying or deleting your experimental changes:
Advanced video: Understanding your experiment results and statistical significance:
Advanced video: Ad Group Experiments: