Explore a comprehensive conference talk on customizing the Open Policy Agent (OPA) for optimal authorization sidecar implementation. Delve into the widespread use of OPA in the CNCF ecosystem and its role as a standardized decision engine for authorization. Learn about common challenges related to performance, decision log collection, and integration with existing security infrastructure. Discover how to leverage OPA's public Golang APIs to create a tailored OPA binary with advanced extensions, including a custom high-performance gRPC front-end API, a Kafka decision log plugin, and OAuth2 Rego builtin functions. Gain valuable insights from Patrick East, an active OPA maintainer, on enhancing OPA's functionality for seamless application integration.