OPA Authorization with Envoy and JWT-SVIDs

Open Policy Agent (OPA) is an open source, general-purpose policy engine. The authorization provided by OPA (AuthZ) can be a good complement to the authentication that SPIRE offers (AuthN). This tutorial builds on the SPIRE Envoy-JWT Tutorial to demonstrate how to combine SPIRE, Envoy and OPA to perform JWT SVID authentication and request authorization.