How can I use A/B testing to optimize my ad copy and creative elements?

A/B testing, commonly known as “split testing,” is the practice of evaluating the effects of a particular ad campaign component on performance. You can better your upcoming campaigns by getting a better understanding of what your audience is responding to.

First of all the actual AB testing feature on Amazon isn’t for Campaigns right now but if you want to test your ads in a sense which performs better then you can run a campaign in broad targeting and then copy that campaign and run another in the phrase or exact targeting. This way you will have a better idea of which campaign will perform better for your product.