Today is is the 25th anniversary of Microsoft in Ireland. Their location has evolved a good bit over the years. Originally it was a CD pressing location and where localization was done. Now there are lots of developers working on coding the latest version of Windows and Azure services, European computing services are/were run from here, and Dublin is one of the 2 geo-located Azure data centres.
There is something going on but it appears to be reserved to the people MS are selling to – Azure and software developers were mentioned on the news.