What Is Service Mesh mTLS?
Service mesh mTLS is the meshs feature of encrypting and mutually authenticating traffic between services using TLS certificates issued and rotated by the mesh. The sidecar proxies handle the handshake transparently, so applications send plain traffic while the wire is secured. Identity is tied to the workload rather than to a network location.
Why it matters
It gives encryption-in-transit and strong service identity across a cluster without changing application code. That makes a zero-trust posture practical for internal traffic.
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