The Fediverse works based on protocols for instance ActivityPub and OStatus, which permit these instances to interact. Each time a user on a single instance posts a message, followers from another instance can see, reply to, and share this information. This interoperability represents a shift toward a more open, inclusive https://econopass.com/news/world/is-the-fediverse-a-threat-to-centralized-social-media-platforms/