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Open Service Mesh (OSM) is a lightweight and extensible cloud native service mesh.
OSM takes a simple approach for users to uniformly manage, secure, and get out-of-the box observability features for highly dynamic microservice environments.
Using the CNCF Envoy project, OSM implements Service Mesh Interface (SMI) for securing and managing your microservice applications.
OSM runs on Kubernetes. The control plane implements Envoy's xDS and is configured with SMI APIs. OSM injects an Envoy proxy as a sidecar container next to each instance of an application.
The data plane (the set of Envoy proxies running as part of OSM) executes rules around access control policies, implements routing configuration, and captures metrics. The control plane continually programs the data plane to ensure policies and routing rules are up to date and ensures the data plane is healthy.
The OSM project builds on the ideas and implementations of many cloud native ecosystem projects including Linkerd, Istio, Consul, Envoy, Kuma, Helm, and the SMI specification.