Ad rotation is the practice of showing different advertisements at the same location on a website page. The ads can be rotated when the web page is completely reloaded, or in a single page load, or both.
Ad rotation helps you showcase your ads on the Search network, as well as Display network. There are 4 different options available for you-
Indefinite rotation- It works the same as even rotation, the only difference being it works for an indefinite amount of time and optimization is not possible in this case.