# Interfaces

> Define interfaces to extend microservices

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LLMS index: [llms.txt](/llms.txt)

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Section pages:

- [Client Server](/docs/interfaces/client-server.html): Go Micro uses a client/server model for RPC communication between services.
- [Registry](/docs/interfaces/registry.html): The registry is responsible for service discovery in Go Micro. It allows services to register themselves and discover other services.
- [Broker](/docs/interfaces/broker.html): The broker provides pub/sub messaging for Go Micro services.
- [Transport](/docs/interfaces/transport.html): The transport layer is responsible for communication between services.
- [Store](/docs/interfaces/store.html): The store provides a pluggable interface for data storage in Go Micro.
- [Plugins](/docs/interfaces/plugins.html): Plugins are scoped under each interface directory within this repository. To use a plugin, import it directly from the corresponding interface subpackage and pass it to your service via options.