Twilio is an American company based in San Francisco, California, which provides programmable communication tools for making and receiving phone calls, sending and receiving text messages, and performing other communication functions using its web service APIs.
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Twilio was founded in 2008 by Jeff Lawson, Evan Cooke, and John Wolthuis and was originally based in both Seattle, Washington, and San Francisco, California.
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Twilio raised approximately $103 million in venture capital growth funding.
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Twilio received its first round of seed funding in March 2009 for an undisclosed amount from Mitch Kapor, The Founders Fund, Dave McClure, David G Cohen, Chris Sacca, Manu Kumar, from K9 Ventures and Jeff Fluhr.
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Twilio received $17 million in a Series C round in December 2011 from Bessemer Venture Partners and Union Square Ventures.
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In July 2015, Twilio raised a $130 million Series E from Fidelity, T Rowe Price, Altimeter Capital Management, and Arrowpoint Partners, in addition to Amazon and Salesforce.
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In March 2020, Twilio announced the appointment of Steve Pugh as Chief Security Officer and Glenn Weinstein as Chief Customer Officer.
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Twilio confirmed the breach three days later, clarifying that it affected only "a limited number" of customer accounts.
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Twilio is known for its use of platform evangelism to acquire customers.
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In February 2015, Twilio acquired Authy, a Y Combinator-backed startup that offers two-factor authentication services to end users, developers and enterprises.
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In September 2016, Twilio acquired Tikal Technologies, the development team behind the Kurento WebRTC open source project, for $8.
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In February 2017, Twilio acquired Beepsend, a Swedish-based SMS messaging provider, for an undisclosed amount.
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In September 2018, Twilio announced they were acquiring Ytica, a Prague, Czech Republic-based speech analytics firm, for an undisclosed amount.
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In October 2018, Twilio announced they were acquiring SendGrid, a Denver, Colorado-based customer communication platform for transactional and marketing email, for $2 billion.
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In November 2018, Twilio reported acquiring Core Network Dynamics GmbH, a Berlin, Germany-based virtual evolved packet core company.
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In July 2020, Twilio announced they had acquired Electric Imp, an internet of things platform company, for an undisclosed amount.
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In May 2021, Twilio announced that they were acquiring Ionic Security, a data security platform.
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In May 2021, Twilio announced that they were acquiring Zipwhip, a toll-free messaging services provider, for $850 million.
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Twilio uses Amazon Web Services to host its communication infrastructure via APIs.
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Twilio follows a set of architectural design principles to protect against unexpected outages and received praise for staying online during the widespread Amazon Web Services outage in April 2011.
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Rather than using industry standard protocols such as SIP for call control Twilio uses a customized markup language known as TwIML to allow for direct integration with its services.
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Twilio is known to support the development of open-source software.
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In June 2010 Twilio launched OpenVBX, an open-source product that lets business users configure phone numbers to receive and route phone calls.
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