Envoy System Version
Styra DAS supports multiple versions of Envoy Systems. Any new Systems are created with Envoy 2.1. For Envoy Systems created prior to Envoy 2.1, Styra DAS does not automatically upgrade existing Systems to Envoy 2.1. To determine which version of Envoy System is installed, select the System, and in the upper right-hand corner of the dialog box, the version is displayed.
The Version Management feature allows to update or rollback of an Envoy System or Stack. See Envoy Version Management for additional information.