What is Federated Software
You've probably heard the term a few times, maybe you even have an account somewhere like Mastodon.
Before we talk about federation, let's explore a situation; Let's say you have MySpace account, and you really enjoy the interface and the community there.
Now your friend has an account on this new site called Facebook. You're not really interested in creating another account somewhere. And then what would you do when you have an awesome cat photo to share? Do you post on Facebook or MySpace?
This is where federation comes in. In this context specifically, something called ActivityPub. You don't need a lot of details, just that ActivityPub is a specification of vocabulary that software can use to describe and communicate activities. Any software that supports ActivityPub can federate with another, that is they can talk about the same things like they were the same platform.
So if your friend on Facebook followed your account on MySpace, you can post all the cat photos and memes you like. And rest assured that your friend will not only see them, but can interacte with them too. Comment, like boost (repost to their friends) and more.
This blog itself is federated, supporting ActivityPub. It is running a blogging platform called WriteFreely. You can follow it using the following federated ID:
So, what kind of software is out there? Probably way too much to list here, so I will list my favorites. Sorry if I leave out yours.