The source is Maho. He's a Microsoft employee who has added ActivityPub (via the Wordpress plug-in) in his spare time. The 2nd person to follow it was also a Microsoft employee - @[email protected] - who I'm sure would be happy to clear up anything about it (I'm not sure if Maho himself is on here,, but Nick is).
That bots bio says "if you would like Microsoft to bring devblogs officially to the fediverse send feedback here" so I think it's not actually federated nor official
Thereβs only a bot sharing links.
Federated would mean more than a bot, right?
When a new post is made in a Community here, the relevant Community bot sends out a link to the post (see screenshot of post the .NET Community bot sent out about this post) - is this Community federated? Same answer.