mirror of https://github.com/istio/istio.io.git
18 lines
825 B
Markdown
18 lines
825 B
Markdown
---
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title: Service Mesh
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test: n/a
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---
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A *service mesh* or simply *mesh* is an infrastructure layer that enables
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managed, observable and secure communication between
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[workload instances](/docs/reference/glossary/#workload-instance).
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Service names combined with a namespace are unique within a mesh.
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In a [multicluster](/docs/reference/glossary/#multicluster) mesh, for example,
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the `bar` service in the `foo` namespace in `cluster-1` is considered the same
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service as the `bar` service in the `foo` namespace in `cluster-2`.
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Since [identities](/docs/reference/glossary/#identity) are shared within the service
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mesh, [workload instances](/docs/reference/glossary/#workload-instance) can authenticate communication with any other [workload
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instance](/docs/reference/glossary/#workload-instance) within the same service mesh.
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