Perpetual licenses are valid indefinitely. Updates and support are included for the first 12 months with the software assurance. If you renew the software assurance subscription, you will get a new license key which grants you support and software updates for another 12 months.
Subscription licenses are valid for 1 year. Updates and support are included in the purchase price.
The license will stop working if you do not renew the subscription.
Pre-Production | License | Types | Subscription | Perpetual | Licenses