+build on top of standards.</li></ul><h2 id=who-uses>Who Uses Protocol Buffers?</h2><p>Many projects use protocol buffers, including the following:</p><ul><li><a href=https://grpc.io>gRPC</a></li><li><a href=https://cloud.google.com>Google Cloud</a></li><li><a href=https://www.envoyproxy.io>Envoy Proxy</a></li></ul><h2 id=work>How do Protocol Buffers Work?</h2><p>The following diagram shows how you use protocol buffers to work with your data.</p><p><img src=/images/protocol-buffers-concepts.png alt="Compilation workflow showing the creation of a proto file, generated code, and compiled classes"><br><strong>Figure 1. Protocol buffers workflow</strong></p><p>The code generated by protocol buffers provides utility methods to retrieve data
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