Envoy is a programmable L7 proxy used as a sidecar or gateway data plane for traffic management, load balancing, and authentication enforcement (e.g. OIDC termination) in service mesh and API gateway architectures.
It is used by OpenAI to route data from Fluent Bit to ClickHouse.1
Footnotes
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[OpenAI | CNCF](https://www.cncf.io/case-studies/openai-2/ ↩