INTRODUCTION TO AT PROTOCOL

Summary from the TLDR newsletter

Bluesky is built on ATProto, or the Authenticated Transfer Protocol. This post explains all of the pieces of the network architecture and how they all fit together. It is aimed at getting readers to better understand how Bluesky and the underlying protocol work and how it differs from the Fediverse. The post is a good starting point for readers who want to start building apps or tools on ATProto.