Twilio is a cloud communications company founded by Jeff Lawson with co-founders Evan Cooke and John Wolthuis in 2008. Its idea was to take the historically closed, hardware-bound world of telephony, SMS, and voice and turn it into a programmable service that any developer could call from code. Instead of negotiating carrier contracts and provisioning equipment, a developer could send a text message or place a phone call with a few lines against a web API.
The platform is built on REST. Twilio’s documentation states that “The Twilio APIs are organized around REST,” with the underlying software layer “connecting and optimizing communications networks around the world.” That abstraction let a programmer treat a phone number, a message, or a call as an addressable resource manipulated over HTTPS, rather than as telecom infrastructure to be operated directly.
Twilio’s 2016 Form S-1 registration statement, filed with the SEC ahead of its public offering, captures the company’s developer-centric thesis. The filing frames the founders’ motivation in developers’ own terms: “Software developers are reinventing nearly every aspect of business today. Yet as developers, we repeatedly encountered an area where we could not innovate — communications.” By mid-2016 the filing reported that over a million developer accounts had registered on the platform.
Lawson became closely associated with the slogan “Ask Your Developer,” the notion that a company’s competitive edge increasingly comes from empowering its software developers to build, and that the right question for many business problems is to put it in front of a developer with a good API. Twilio’s growth was evidence for that argument: customers built notifications, two-factor authentication, call centers, and entire communication features on top of its endpoints.
Together with Stripe, Twilio is one of the canonical examples of the API economy. It did not sell a finished application; it sold reliable, well-documented access to a hard capability and let other companies compose it into their own products. Its emphasis on documentation, quick-start guides, and self-service onboarding made developer experience a core part of the business rather than an afterthought.