RapidAPI has confirmed a $25m round led by Microsoft unit M12 that brought the software API marketplace’s overall funding to more than $37m.

US-based software application programming interface (API) marketplace RapidAPI has attracted $25m in a series B round led by M12, the corporate venturing arm of computer software and technology producer Microsoft.

Family office DNS Capital also took part in the round, together with venture capital firms Andreessen Horowitz and Green Bay Ventures. Axios reported RapidAPI raised $25m from M12 and Andreessen Horowitz in February 2019, and the official announcement is likely the confirmation of that round.

Founded in 2015, RapidAPI…