# Twilio

> Communications APIs for voice, SMS, and customer engagement.

## Why it is interesting

Developer-first telecom APIs — Bessemer and USV in B/C rounds; a16z on cap table per investment list.

## Profile

- **Stage:** public
- **Status:** public
- **Industries:** infra-cloud, developer-tools
- **Coverage:** full
- **Last updated:** 2026-07-24

## Key facts

- Series B (Nov 2010): $12M led by Bessemer; USV participated (TechCrunch)
- Series C (Dec 2011): $17M from Bessemer and USV (TechCrunch)
- IPO (2016): NYSE: TWLO

## Investors in our directory

- https://venturecapitaltracker.com/fund/andreessen-horowitz
- https://venturecapitaltracker.com/fund/bessemer-venture-partners
- https://venturecapitaltracker.com/fund/union-square-ventures

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Source: https://venturecapitaltracker.com/startup/twilio