Workspaces are a way to organize and manage content within Microsoft Fabric. This includes Power BI content. Adam walks you through what Workspaces are all about and different options available.
Workspaces
https://learn.microsoft.com/fabric/get-started/workspaces
Roles in workspaces in Microsoft Fabric
https://learn.microsoft.com/fabric/get-started/roles-workspaces
Workspaces in Power BI
https://learn.microsoft.com/power-bi/collaborate-share/service-new-workspaces