# Contributing to Consul See [our contributing guide](../.github/CONTRIBUTING.md) to get started. This directory contains documentation intended for anyone interested in understanding, and contributing changes to, the Consul codebase. ## Overview This documentation is organized into the following categories. Each category is either a significant architectural layer, or major functional area of Consul. ![Overview](./overview.svg) [source](./overview.mmd) ## Contents 1. [Overview](./INTERNALS.md) 1. [Agent Configuration](./config) 1. [RPC](./rpc) 1. [Cluster Persistence](./persistence) 1. [Client Agent](./client-agent) 1. [Service Discovery](./service-discovery) 1. [Service Mesh (Connect)](./service-mesh) 1. [Cluster Membership](./cluster-membership) 1. [Key/Value Store](./kv) 1. [ACL](./acl) 1. [Multi-Cluster Federation](./cluster-federation)