![Stanford Entrepreneurship Videos show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/028/130/small/stanford-entrepreneurship-videos.jpg)
Summary: Entrepreneur Stewart Butterfield describes how Slack grew organically out of a need for a tool to improve in-house communication and coordination, not necessarily as a premeditated product intended for the market. "Just like any other business, most of your daily effort is in communication," Butterfield says to Andrew Braccia of Accel Partners.