mastodon.social is one of the many independent Mastodon servers you can use to participate in the fediverse.
The original server operated by the Mastodon gGmbH non-profit

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The Swiss Government has officially launched their Mastodon server at social.admin.ch/

In their official press release the Government confirms it is a trial for one year. They state that "Mastodon has several characteristics that make it fundamentally attractive for government communications", such as being beyond the control of others, as well as it being privacy friendly.

Official press release: admin.ch/gov/de/start/dokument

Speaker of the Swiss Government: @gov

Mastodon hosted on social.admin.chBundesrat - Conseil fédéral - Consiglio federale - Cussegl federalDie Instanz der Schweizer Regierung. L' instance du gouvenement suisse. L' istanza del governo svizzero. L' istanza de la regenza svizra.

We now have the following national governments with a Mastodon server:

- Germany: social.bund.de
- The Netherlands: social.overheid.nl
- Switzerland: social.admin.ch

As well as the EU with
- social.network.europa.eu

Let's hope that other countries will follow this design pattern, and all launch a fediverse server at social.[governmentwebsite].[TLD]. Following this pattern makes it immediately clear to people they are communicating with an official government account.

Mastodon hosted on social.bund.desocial.bund.deDies ist der Mastodon-Server der Bundesbeauftragten für den Datenschutz und die Informationsfreiheit (BfDI).
tessarakt

@fediversereport Does Bundesservice Kommunikation have a social.bund.de account?