In WordPress, a Super Admin is a user role with the highest level of access and privileges on a WordPress Multisite network. The Super Admin has the ability to manage and control all aspects of the network, including adding new sites, managing users, installing and activating themes and plugins, and modifying network-wide settings.
The Super Admin role is created when a user installs WordPress Multisite, which allows for the creation of multiple WordPress sites from a single installation. The person who installs the Multisite network automatically becomes the Super Admin by default, but the role can be assigned to other users as well.
Super Admins have access to a special admin dashboard called the Network Admin, which allows them to manage all the sites in the network from a single location. From the Network Admin, Super Admins can access the dashboard of each individual site in the network, as well as the Super Admin-specific settings and features.
Overall, the Super Admin role is an important part of WordPress Multisite, as it allows for the centralized management of multiple sites from a single location.