Multi-site management is the term used for managing multiple WordPress sites from a single WordPress installation. There are a few plugins that allow you to do this, but the most popular is Jetpack Manage.With Jetpack Manage, you can manage multiple WordPress sites from a single WordPress installation. This is handy if you have multiple WordPress sites, or if you manage multiple WordPress installations for clients. You can add, remove, and edit sites from your Jetpack Manage dashboard. You can also add users to each site, and manage their permissions.