If you make the same set of transformations often, you have the option to save them as a preset. A preset enables you to apply all your image transformations to multiple assets, and in one go instead of applying required transformations separately.
Presets are nothing but a set of transformations that are named.
A preset can only have a maximum of 15 transformations in it.
Follow the below guides if you want detailed step-by-step instructions on how to configure and use Presets: