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Twilio Inc.

Company logo
Type of business Public
Traded as NYSETWLO Class A
Russell 1000 Component
Founded 2008; 12 years ago


Key people Jeff Lawson (co-founder, CEO), Evan Cooke (co-founder, CTO), John Wolthuis (co-founder)
Industry Communications
Products Voice
SIP Trunking
Call Center
Revenue Increase US$ 1.13 billion[1]
Employees 2,500 (2020)

Twilio (/ˈtwɪli/) is a cloud communications platform as a service (CPaaS) company based in San FranciscoCalifornia. Twilio allows software developers to programmatically make and receive phone calls, send and receive text messages, and perform other communication functions using its web service APIs.


Twilio was founded in 2008 by Jeff Lawson, Evan Cooke, and John Wolthuis[2] and was originally based in both Seattle, Washington, and San FranciscoCalifornia.[3]

Twilio’s first major press coverage, in November 2008, was the result of an application built by Jeff Lawson to rickroll people, which investor Dave McClure used on TechCrunch founder and editor Michael Arrington as a prank.[4] A few days later on November 20, 2008, the company launched Twilio Voice, an API to make and receive phone calls completely hosted in the cloud.[5] Twilio’s text messaging API was released in February 2010,[6] and SMS shortcodes were released in public beta in July 2011.[7]

Twilio raised approximately $103 million in venture capital growth funding. Twilio received its first round of seed funding in March 2009 for an undisclosed amount, rumored to be around $250,000,[8] from Mitch KaporThe Founders FundDave McClure, David G. Cohen, Chris Sacca, Manu Kumar, from K9 Ventures and Jeff Fluhr.[9] Twilio’s first A round of funding was led by Union Square Ventures for $3.7 million[2] and its second B round of funding, for $12 million, was led by Bessemer Venture Partners.[10] Twilio received $17 million in a Series C round in December 2011 from Bessemer Venture Partners and Union Square Ventures.[11] In July 2013 Twilio received another $70 million from Redpoint VenturesDraper Fisher Jurvetson (DFJ) and Bessemer Venture Partners.[12] In July 2015, Twilio raised a $130 million Series E from FidelityT Rowe Price, Altimeter Capital Management, Arrowpoint Partners, in addition to Amazon and Salesforce.[13]

In March 2020, Twilio announced the appointment of Steve Pugh as Chief Security Officer and Glenn Weinstein as Chief Customer Officer.[14]


Twilio is known for its use of platform evangelism to acquire customers.[15] An early example is GroupMe, which was founded in May 2010 at the TechCrunch Disrupt hackathon and uses Twilio’s text messaging product to facilitate group chat.[16] It raised $10.6 million in venture funding in January 2011.[17]

Following the success of the TechCrunch Disrupt hackathon, seed accelerator 500 Startups announced the Twilio Fund, a $250,000 “micro-fund” to provide seed money to startups using Twilio in September 2010.[18][19]


In February 2015, Twilio acquired Authy, a Y Combinator-backed startup that offers two-factor authentication services to end users, developers and enterprises.[20]

In September 2016, Twilio acquired Tikal Technologies, the development team behind the Kurento WebRTC open source project, for $8.5 million.[21]

In February 2017, Twilio acquired Beepsend, a Swedish-based SMS messaging provider, for an undisclosed amount.[22]

In September 2018, Twilio announced they were acquiring Ytica, a Prague, Czech Republic-based speech analytics firm, for an undisclosed amount.[23]

In October 2018, Twilio announced they were acquiring SendGrid, a Denver, Colorado-based customer communication platform for transactional and marketing email, for $2 billion.[24]


Twilio uses Amazon Web Services to host telephony infrastructure and provide connectivity between HTTP and the public switched telephone network (PSTN) through its APIs.[25]

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.[26]

Twilio supports the development of open-source software and regularly makes contributions to the open-source community. In June 2010 Twilio launched OpenVBX, an open-source product that lets business users configure phone numbers to receive and route phone calls.[27] One month later, Twilio engineer Kyle Conroy released Stashboard, an open-source status dashboard written in the Python programming language that any API or software service can use to display whether their service is functioning properly.[28] Twilio also sponsors Localtunnel, created by now ex-Twilio engineer Jeff Lindsay, which enables software developers to expose their local development environment to the public internet from behind a NAT.[29]

Twilio lists a number of other open-source projects on their website including:

  1. Flask Restful: Python Flask (web framework) to build REST APIs.[30]
  2. Shadow: Runs requests through a release candidate with real production traffic.[31]
  3. Banker’s Box: Wrapper for storage backend.[32]

See also[edit]


  1. ^ “Twilio company profile” Retrieved 2020-04-10.
  2. Jump up to:a b “Twilio Raises $3.7 Million For Powerful Telephony API”. TechCrunch. 2009-12-30. Retrieved 2015-12-03.
  3. ^ “Twilio scores funding to build telecom in the cloud business” Retrieved 2015-12-03.
  4. ^ Arrington, Michael (November 18, 2008). “Thanks Twilio, No One Is Safe From The RickRoll Now”TechCrunch
  5. ^ Kincaid, Jason (November 20, 2008). “Twilio: Powerful API For Phone Services That Can Recreate GrandCentral’s Core Functionality In 15 Lines Of Code”. TechCrunch.
  6. ^ Kincaid, Jason (February 9, 2010). “Twilio’s Telephony API Now Lets Applications Send And Receive SMS Messages”. TechCrunch.
  7. ^ Kincaid, Jason (July 13, 2011). “Twilio’s Streamlined Shortcode API Now Open To All”. TechCrunch.
  8. ^ “Twilio – Crunchbase”. Archived from the original on July 17, 2011. Retrieved July 20, 2011.
  9. ^ “Twilio Closes Funding Round, Lands Major Customers For Its Telephony API”. TechCrunch. 2009-03-02. Retrieved 2015-12-03.
  10. ^ “Twilio Raises $12 Million For Powerful Telephony API”. TechCrunch. 2010-11-09. Retrieved 2015-12-03.
  11. ^ “Twilio Raises $17 Million Series C From Bessemer and Union Square To Expand Abroad”. TechCrunch. 2011-12-07. Retrieved 2015-12-03.
  12. ^ “Twilio Raises A $70M Series D As They Consider An IPO”. TechCrunch. 2013-06-07. Retrieved 2015-12-03.
  13. ^ “Twilio lands $130 million to make it easier to communicate via software”Fortune. Retrieved 2019-01-02.
  14. ^ “Twilio Welcomes Steve Pugh as Chief Security Officer and Glenn Weinstein as Chief Customer Officer”Valdosta Daily Times. Retrieved 2020-03-05.
  15. ^ “Twilio’s Founder On How To Partner With 20,000 Developers – with Jeff Lawson”. Mixergy. 2011-01-10. Retrieved 2015-12-03.
  16. ^ “Inception: A Hackday Dream (The Story Of GroupMe)”. TechCrunch. 2010-08-26. Retrieved 2015-12-03.
  17. ^ Matthew Lynley January 4, 2011 3:37 PM (2011-01-04). “Group texting startup GroupMe raises $10.6M despite being a long way from revenue | VentureBeat | Deals | by Matthew Lynley”. VentureBeat. Retrieved 2015-12-03.
  18. ^ Om Malik (2010-09-23). “Got a Twilio-based App? Get Some Investment Dollars”. Gigaom. Retrieved 2015-12-03.
  19. ^ “Announcing Twilio Fund for 500 Startups”. Archived from the original on January 30, 2011. Retrieved July 21, 2011.
  20. ^ Lardinois, Frederic (2015-02-24). “Twilio Acquires Two-Factor Authentication Service Authy”TechCrunch. Retrieved 2017-12-28.
  21. ^ “Twilio paid $8.5 million in cash for assets of Kurento Open Source Project”. VentureBeat. 2017-02-22. Retrieved 2017-02-25.
  22. ^ Matney, Lucas (2017-02-07). “Twilio acquires Beepsend to make message delivery more efficient on its Super Network”TechCrunch. Retrieved 2017-12-28.
  23. ^ Miller, Ron (2018-09-11). “Twilio’s contact center products just got more analytical with Ytica acquisition”TechCrunch.
  24. ^ “Twilio to Acquire SendGrid, the Leading Email API Platform”. BusinessWire. 2018-10-15. Retrieved 2018-10-16.
  25. ^ Harris, Derrick (March 3, 2009). “Why Amazon Will Make or Break Twilio”. Gigaom.
  26. ^ Dubray, Jean-Jacques (April 25, 2011). “Twilio’s Cloud Architecture Principles”. InfoQ.
  27. ^ “Twilio Releases OpenVBX, An Open Source Google Voice For Businesses”. TechCrunch. 2010-06-15. Retrieved 2015-12-03.
  28. ^ Catacchio, Chad (July 21, 2010). “Twilio open-sources Stashboard, an API monitoring dashboard”. The Next Web.
  29. ^ “Making a Local Web Server Public with Localtunnel” 2011-06-06. Retrieved 2015-12-03.
  30. ^ “flask-restful/flask-restful · GitHub” Retrieved 2015-12-03.
  31. ^ “twilio/shadow — GitHub” Retrieved 2015-12-03.
  32. ^ “twilio/BankersBox — GitHub” Retrieved 2015-12-03.

External links[edit]

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