One license is required per instance per year. If there are multiple instances on a single server, you still need one license per instance.
You need a license per node in a cluster or High Availability Group
License includes:
- Subscription term is 12 months.
- Includes Right-to-Use (RTU) software license.
- Includes support via email.
- Includes maintenance and updates.
- Unlimited number of users.
You will need to renew your subscription license to continue using the software.