The fediverse is the network of federated decentralized social media using activitypub to connect. Lemmy (the software on which chapo.chat is based) will be in some months part of this network.
What do you think about fediverse ? Are some of you using Mastodon as a twitter replacement ?
Maybe I played a bit fast and loose with those words, but federation enables decentralization while allowing these services to talk to each other. I know you find the latter part pointless, but yeah.
Federation does not enable decentralization. Federation enables the sharing of resources across different independent systems. This is used to remove duplication of resources. Identities, for example.