Associate a SharePoint hub to another hub to expand search results across multiple hubs in your organization. This enables users to discover relevant content when searching on any sites related to the associated hubs. Learn more about how to plan and create hub sites for your organization.
A SharePoint hub site links together sites based on a project, department, division, region, etc. Associating a SharePoint site with a hub site makes it easier for users to discover related content, news, and site activity across all associated sites.
SharePoint administrators can create hub sites in SharePoint in Microsoft 365. To create a hub site, a SharePoint admin changes an existing site to a hub site.