The word federated makes total sense. Thanks! The word decentralized was written by the author of the OP, not by me and that's why I needed to ask the folks here if Mastodon is really decentralized. Your comment clarifies it for me. So thank you!
At the level of instances (plural), no one is central. The network is decentralized, containing multiple centers, all (most) of which are connected through federation (the word "affiliation" is not too far off either). And, while yes, any one instance could be considered a "center" and thus maybe considered to be centralized, it really isn't. Decentralization is less about a single specific object or node, and more about how said objects interact and relate.
Side note: I think when it comes to convos around decentralized networks, there really needs to be more investment in how they differ from distributed networks. In that difference is a ton of insight about how systems function, etc, imo. Personally, I'm much more interested in distributed networks.
>Calling a network “decentralized” only defines it by what it is not — it is not dependent on a single set of servers run by one company. What it actually is can look like many different things. Federated and peer-to-peer (p2p) protocols are different approaches to designing networks that structurally empower users.
https://medium.com/decentralized-web/decentralized-social-ne...