An Exchange Server 2010 license allows your organization to run Microsoft’s email and calendaring platform on your own server environment.
Yes, Exchange Server 2010 requires a server license plus Client Access Licenses (CALs) for each user or device that connects to the server.
Yes, even though it’s an older version, valid licenses can still be activated and used in supported environments.
Many small businesses still use Exchange 2010 because it offers reliable email, shared calendars, and basic collaboration tools without needing cloud services.