Segment.io

One of the most widely adopted CDPs globally, serving as a foundational data infrastructure layer for thousands of businesses; now a core component of Twilio's customer engagement platform

Segment, now operating as a subsidiary of Twilio following its acquisition, is one of the most widely adopted customer data platforms (CDPs) in the market. The platform enables businesses to collect event data from websites, mobile apps, and servers, then standardize and route that data to hundreds of third-party tools — including analytics platforms, CRMs, marketing automation systems, and data warehouses — through a single API. This 'collect once, send anywhere' architecture dramatically simplifies the data integration challenge that modern digital businesses face. Founded in 2011 and headquartered in San Francisco, Segment grew rapidly by solving a universal pain point: the fragmentation of customer data across dozens of siloed tools. Its Connections product handles data collection and routing, while Personas (now Twilio Engage) adds identity resolution and audience-building capabilities. Segment's Protocols product helps teams enforce data quality and governance standards. Twilio completed its acquisition of Segment in November 2020 for approximately $3.2 billion, positioning the combined company to offer a full customer engagement stack spanning communications and data. Within the AdTech and MarTech ecosystem, Segment holds a strong position as a foundational data infrastructure layer. It competes with other CDPs such as mParticle, Rudderstack, and Tealium, but benefits from an extensive integration catalog of over 400 destinations, a large developer community, and deep integration with Twilio's communications platform. The acquisition has enabled Twilio to build Twilio Engage, a customer engagement product that combines Segment's CDP capabilities with Twilio's messaging and communications infrastructure.