Extensions, rules, and data elements are building blocks. When you want to make your application do something, these building blocks are added to libraries and then a library is "built" into a build. Those builds are delivered to a hosted location.
Hosts define available destinations where the builds can be delivered. They come in two types:
For detailed information about each host type, please use the links above.
The same host can be used for multiple environments within a property.
For more information to help you decide between self-hosting and having Adobe manage the hosting for you, please read the Self-hosting Guide .