Boulder, Colorado-based Stream, providers of enterprise activity feed and chat APIs, has closed a $15 million Series A round of investments.

The funding was led by GGV Capital, with participation from 01 Advisors, Knight, and existing investor Arthur Ventures. Olivier Pomel, CEO of Datadog, and Tom Preston-Werner, co-founder of GitHub, also participated in the fundings.

Tiffany Luck from GGV Capital will join the Stream board.

Stream was founded by Thierry Schellenbach and Tommaso Barbugli in Amsterdam, The Netherlands. The company participated in the Techstars NYC program, and subsequently moved its headquarters to Boulder, Colorado. Currently, Stream employs 55 people.