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Mutual TLS - CI/CD Glossary Definition

Mutual TLS authenticates and encrypts both ends of a connection, so services prove identity to each other, not just the server.

Mutual TLS (mTLS) is a form of TLS where both the client and the server present certificates and verify each other, providing two-way authentication and encryption for service-to-service traffic.

Service meshes often enable mTLS automatically between sidecars. It secures east-west traffic without changing application code.

Automatic in meshes

A mesh can issue and rotate certificates and enforce mTLS between proxies transparently, so newly deployed pods join the encrypted mesh without extra configuration.

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