TWILIO

Jeff Lawson was a serial entrepreneur who previously co-founded NineMeChat and worked at Amazon Web Services. He saw that AWS had made it easy to spin up servers with an API call, but communications — texting, calling, video — still required enterprise contracts with telecom carriers.

He founded Twilio in 2008 with Evan Cooke and John Wolthuis to make communications as easy as any other API. The first product was a simple API: send an HTTP request, Twilio sends a text message.

That was it. Developers loved it because it took 5 minutes to integrate instead of 5 months of telecom negotiations.

Twilio launched at a TechCrunch event in 2008 by letting attendees build apps that made phone calls during the demo. It was one of the most memorable developer product launches in tech history.

The company grew developer-first — no enterprise sales team for years, just great documentation and a free trial.

Usage-based API pricing. Twilio charges per API call — per text message sent ($0.0079), per minute of voice call ($0.0085/min), per email sent (via SendGrid), per authentication (via Verify).

The more messages and calls your app sends, the more you pay. This model scales beautifully — as customers grow their user bases, their Twilio usage (and bills) grow automatically.

Revenue was $4 billion in 2023. The top customers spend tens of millions per year.

The model is sticky because switching communications providers requires rewriting code — once you build on Twilio's API, ripping it out is painful and expensive.

Twilio Programmable Messaging — API for SMS, MMS, and WhatsApp messaging. Twilio Programmable Voice — API for making and receiving phone calls.

Twilio Verify — two-factor authentication and phone verification API. Twilio SendGrid — email delivery and marketing email platform (acquired for $2B).

Twilio Segment — customer data platform that unifies customer data across touchpoints (acquired for $3.2B). Twilio Flex — cloud-based contact center platform.

Twilio Video — API for embedding video communication into applications. Twilio Conversations — multi-channel messaging API (SMS, WhatsApp, chat).

Twilio Lookup — phone number intelligence API. TaskRouter — intelligent task routing for contact centers.

Developer-first adoption. Twilio was one of the first companies to prove that you could build a multi-billion dollar business by marketing directly to developers instead of CTOs.

Their documentation was legendary — so clear and well-organized that developers could integrate Twilio in minutes without talking to a salesperson. They offered $10 in free credits to start, which was enough to send a few hundred texts and get hooked.

The annual Signal conference built developer community and loyalty. Twilio also acquired strategically — SendGrid ($2B, email API) and Segment ($3.2B, customer data) — to become a complete customer engagement platform, not just a messaging API.

The expansion from "send a text" to "understand and engage your entire customer base" was ambitious but necessary to justify the valuation.

Profitability and the post-hype correction. Twilio grew revenue aggressively but burned cash doing it.

The stock peaked at over $400/share ($65B market cap) in early 2021, then fell over 80% as investors rotated out of unprofitable growth stocks. Twilio laid off 11% of its workforce in 2022 and another 17% in 2023 — over 2,500 employees total.

The company has since pivoted to profitability, achieving its first GAAP profitable quarter in 2024. The other challenge: the $3.2 billion acquisition of Segment (customer data platform) in 2020 was widely criticized as overpaying.

Segment is a good product but the integration has been slower than expected. Competition is also intensifying — Vonage (acquired by Ericsson), MessageBird, and dozens of regional competitors offer similar APIs at lower prices.

Bessemer Venture Partners, Union Square Ventures, Salesforce Ventures, Amazon (Alexa Fund), Fidelity. IPO'd on NYSE in June 2016.

Pre-IPO raised $253 million across multiple rounds. The stock peaked above $400/share in early 2021 before falling over 80% as growth decelerated and the market punished unprofitable tech companies.