What is a Service Mesh?

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Service Mesh is a technology that aims to “improve the security, observability and traffic control of distributed systems”. More specifically, a service mesh is a component of orchestration tools for containerized environments such as Kubernetes, typically responsible for functions that include routing traffic among containerized applications, serving as the interface for defining autonomous service-to-service mutual TLS (mTLS) policies and then enforcing them, and providing visibility into application availability and security. Like Kubernetes as a whole, service meshes consist of control, management, and data planes.
Service meshes typically handle traffic management and security in a way that’s transparent to the containerized applications. By offloading functions like SSL/TLS and load balancing, service meshes free developers from having to implement security or service availability separately in each application.
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[@santoshinge]

Nice explanation. Thanks