Purpose

Istio is an open source service mesh that layers transparently onto existing distributed applications. Istio’s powerful features provide a uniform and more efficient way to secure, connect, and monitor services. Istio is the path to load balancing, service-to-service authentication, and monitoring – with few or no service code changes.

Its powerful control plane brings vital features, including:

  • Secure service-to-service communication in a cluster with TLS encryption, strong identity based authentication and authorization

  • Automatic load balancing for HTTP, gRPC, WebSocket, and TCP traffic

  • Fine-grained control of traffic behavior with rich routing rules, retries, failovers, and fault injection

  • A pluggable policy layer and configuration API supporting access controls, rate limits and quotas

  • Automatic metrics, logs, and traces for all traffic within a cluster, including cluster ingress and egress

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