Splunk AppDynamics maintains and supports every software version for one calendar year after the next major software release is generally available. For example, support and maintenance of the 20.3 release will continue for 12 months after the 20.4 release.

Maintenance Support for On-Premises

Customers with on-premises deployments of the AppDynamics product are responsible for managing and maintaining the product within their own environments. For more details, refer to the AppDynamics On-Premises and Virtual Appliance (Self-Hosted).