Technology
This is the official technology community of Lemmy.ml for all news related to creation and use of technology, and to facilitate civil, meaningful discussion around it.
Ask in DM before posting product reviews or ads. All such posts otherwise are subject to removal.
Rules:
1: All Lemmy rules apply
2: Do not post low effort posts
3: NEVER post naziped*gore stuff
4: Always post article URLs or their archived version URLs as sources, NOT screenshots. Help the blind users.
5: personal rants of Big Tech CEOs like Elon Musk are unwelcome (does not include posts about their companies affecting wide range of people)
6: no advertisement posts unless verified as legitimate and non-exploitative/non-consumerist
7: crypto related posts, unless essential, are disallowed
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Federation is when two or more distinct networks interact through a common protocol. Email systems are all part of the same store-and-forward model.
You can say that email is federated with newsgroups but email is not federated within itself. A system with multiple instances that use the same implementation is called distributed. Federation means hopping across networks of distributed systems with different implementations.
Example 1: people think that Lemmy is a federated system. On its own it's not. It's federated because it interacts with other systems (Mastodon, Kbin etc.) If the others didn't exist then Lemmy would simply be a distributed system, not federated.
Example 2: Bluesky is not federated even though it's distributed and technically capable of federation.
You could say that email is federated, there are multiple implementations of mail servers.