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Twilio nets $17m for cloud communications platform

The company, which has 75,000 developer customers, makes a cloud-based platform that lets almost anyone create simple voice applications without working with legacy carriers. It has now raised a total of $31.5 million in three rounds of financing.

Twilio, the maker of a platform for developing cloud-based communications apps, said today it has closed a $17 million C round of funding.

All told, Twilio has now raised $31.5 million. Its new round was led by Bessemer Venture Partners and Union Square Ventures, both of which had participated in its B round. Union Square also invested in Twilio's A round.

Twilio's platform is a favorite of developers interested in building cloud-based VoIP, text messaging and phone functionality into their existing applications. In 2011, the company said, its customer base exploded, expanding by 400 percent. To date, nearly 75,000 developers are using the Twilio platform. Among those are GroupMe, eBay, Hulu, Airbnb, LinkedIn,, and others.

The company's popularity with developers seems due in large part to the fact that its tools are meant to be used by almost anyone, and allow quick and easy app development without having to negotiate with legacy communications carriers or infrastructure providers.

Twilio said it plans to use its new funding to expand its operations around the world, and to grow its staff, which currently numbers about 100, up from 25 at the beginning of 2011.