After pricing lower than expected at $9 per share, Envivio Inc. raised $70 million in its initial public offering. The video-processing platform begins trading on the Nasdaq Wednesday, April 25, under the ticker, ENVI. CEO Julien Signes explains that the proceeds will be used to expand marketing, corporate R&D and possibly technology acquisitions. He goes on to describe how Envivio will continue to differentiate itself from competing products at Cisco Systems Inc. and Google Inc. - Katie Roof