Supported API versions
Envoy’s APIs follow a versioning scheme. The following version is currently supported:
v3 xDS API (active). Per the additional information in the versioning scheme, the v3 xDS is the final major version and will be supported forever.
The following API versions are no longer supported by Envoy:
v1 xDS API. This was the legacy REST-JSON API that preceded the current Protobuf and dual REST/gRPC xDS APIs.
v2 xDS API. Support for this was removed in Q1 2021.