Why did Microsoft acquire LinkedIn?

It's been 10+ years since Microsoft acquired LinkedIn (June 2016) and I'm still curious what was going on in the MS executive board that drove them to that decision.

Microsoft is primarily a software company and does have a social media presence (unlike Google or Meta).

I haven't seen any large synergies come out of the acquisition either, maybe the subscriber data is useful somewhere but I don't see it.

Just curious