One of the cool companies that has emerged in this new API economy is Twilio. Twilio provides APIs for building voice, voip, and SMS applications. Essentially, Twilio acts as an intermediary between phones (voice & SMS) and back end applications, allowing verbal and phone-based commands to be translated into back end API calls on their customers’ sites.
This allows organizations to quickly provide phone-based APIs to allow them to build IVR-like interactions into any application, or even add phone functionality into any application (for live support or other purposes).
It seems like a pretty simple idea, but Twilio has built this into a decent business, with flagship customers like Intuit, Salesforce.com, and eBay. It is one of a few good examples of the API service economy that has emerged around this growing trend.