···15151616_If you are familiar with ATProto already, [skip ahead](#setting-up-a-pds)._
17171818-Atproto is decentralised in a way that differs from other solutions like [ActivityPub](https://en.wikipedia.org/wiki/ActivityPub), which services like Mastodon implement.
1919-There are multiple parts that work together and can be hosted separately.
2020-Let's go over some rough definitions for the important bits, you'll find better explanations in the [atproto docs](https://atproto.com/guides/glossary).
1818+In atproto's decentralisation model, there are multiple parts that work together and can be hosted separately.
1919+This differs from other solutions like [ActivityPub](https://en.wikipedia.org/wiki/ActivityPub), which services like Mastodon implement.
2020+Dan Abramov, who previously worked at Bluesky, made a [good write-up explaining the difference](https://news.ycombinator.com/item?id=45077986).
2121+2222+Let's go over some rough definitions for the important bits. You'll find better explanations in the [atproto docs](https://atproto.com/guides/glossary).
21232224#### PDS
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