As a developer, you can create and manage custom components and layouts. As a site contributor, you can register third-party components (apps) and component groups.
Custom components include component groups you create in the editor, and local and remote components you create using options described in this section. Custom layouts include section layouts for arranging components in a slot on a page and content layouts for arranging the fields in a content item.
To learn how to use components with your site, see Arrange Page Content.
For information about using individual components, see Use Built-In Components.
For details about how to create your own components, see Develop Components.