Twilio supplies cloud communications infrastructure that lets businesses build customer interactions into their own software. Its application programming interfaces (APIs) let developers embed text messaging, voice calls, email and video, while packaged products handle specific engagement needs. Named offerings include Programmable Messaging (covering SMS, MMS, RCS and over-the-top channels such as WhatsApp), Programmable Voice, SendGrid Email and Marketing Campaigns, the Verify authentication and identity service, and Segment, a platform that unifies first-party customer data. These run on the Super Network, a layer connecting carriers and inbox providers worldwide.
Customers range from small firms to large enterprises across many industries; as of December 2025 the company reported over 402,000 Active Customer Accounts. Twilio charges a mix of usage-based and subscription fees: messaging, voice and authentication are billed by usage, while Email and Segment are largely subscription-based. It reaches customers through self-service sign-up, direct sales and partners, including independent software vendors who resell its APIs.
Growth has been chiefly organic, supplemented by acquisitions. By the end of 2025 Twilio held 382 issued US patents.
Based on Twilio Inc's 10-K filed February 24, 2026.