Threads lyfter fram fediversum-svar i appen

Fediversum (engelska: Fediverse) är ett nätverk av olika webbtjänster och -servrar som kommunicerar över en uppsättning gemensamma protokoll. Namnet är ett teleskopord av ”federation” och ”universum” som syftar på nätverkets uppbyggnad av samverkande delar. Den största enskilda plattformen är Mastodon som 2019 hade fler än 3 800 000 användare på 2 700 instanser. Sammanlagt har Fediversum fler än 8 900 000 användare fördelade över 19 000 instanser och 100 sammanlänkade projekt.

ActivityPub is a protocol and open standard for decentralized social networking. It provides a client-to-server (shortened to C2S) API for creating and modifying content, as well as a federated server-to-server (S2S) protocol for delivering notifications and content to other servers. ActivityPub has become the main standard used in the fediverse, a popular network used for social networking that consists of software such as Mastodon, Pixelfed and PeerTube. ActivityPub is considered to be an update to the ActivityPump protocol used in pump.io, and the official W3C repository for ActivityPub is identified as a fork of ActivityPump. The creation of a new standard for decentralized social networking was prompted by the complexity of OStatus, the most commonly used protocol at the time. OStatus was built using a multitude of technologies (such as Atom, Salmon, WebSub and WebFinger), a product of the infrastructure used in GNU social (the originator and largest user of the OStatus protocol), which made it difficult to implement the protocol into new software. OStatus was also only designed to work with microblogging services, with little flexibility to the types of data that it could hold. The standard was first published by the World Wide Web Consortium (W3C) as a W3C Recommendation in January 2018 by the Social Web Working Group (SocialWG), a working group chartered to build the protocols and vocabularies needed to create a standard for social functionality. Shortly after, further development was moved to the Social Web Incubator Community Group (SocialCG), the successor to the SocialWG.