Eighty-five new jobs will be created as part of the move and the Department for the Economy is providing £800,000 in funding for pre-employment training places at Belfast Met.
Microsoft already employs 28 people at its Belfast offices.
Economy Minister Diane Dodds said the investment was a result of the talent available in Northern Ireland.
“Microsoft is collaborating with my department and the college to develop Assured Skills Academies for participants to up-skill and compete for roles in the company’s new cyber security centre,” she said.