Microsoft will be the anchor tenant for the newest expansion of the Cortex tech hub, the software giant said Wednesday.

The company will move its offices from the CityPlace office complex in Creve Coeur to the Central West End technology district when Cortex’s newest office and lab building opens in the summer of 2018.

Microsoft will occupy about 30,000 square feet of the new $55 million, 180,000-square-foot office and lab complex being developed by Wexford Science and Technology on the parking lot next to the @4240 lab and office building.

A total of 150 Microsoft employees will work at the new building at 4220 Duncan Avenue, including about 60 people who are currently based in its Creve Coeur office.