Microsoft first opened its doors in Ireland in 1985 with a small manufacturing facility employing just over one hundred people. Since that time, Microsoft Ireland has grown to encompass four distinct operations at its campus in Sandyford in Dublin, employing over 1,200 full time employees and 700 full-time contract staff.

Microsoft's operations in Ireland include software development and testing, localisation, operations, finance, IT, HR and sales & marketing, both here in Ireland and across Europe, Middle East and Africa.