Just ten years ago, deploying applications involved assembling the entire food chain down to the physical hardware. The process was lengthy, expensive, and complex. Product choices existed, but infrastructure deployment was a requirement. Today, one can use services consumed as applications. I call them infrastructure apps.
Twilio, a San Francisco-based startup that offers a platform and services to marry voice to the web world is launching OpenVBX, an open source web application that is in essence a roll-your-own Google Voice. With the app you can route calls to existing phones.