Every Windows product has a lifecycle. The lifecycle begins when a product is released and ends when it's no longer supported. Knowing key dates in this lifecycle helps you make informed decisions about when to upgrade or make other changes to your software.
the security (printers/devices) edition
the security (desktops) edition
the cloud (priting) edition
the cloud (office 365) edition
the cloud (backups) edition
the (managed services) total IT management edition
the (managed services) printing edition
the (managed services) firewalls & backups edition
the printing edition
the networking edition
the green edition