Segment was founded in 2011 by Peter Reinhardt, Ilya Volodarsky, Ian Storm Taylor, and Calvin French-Owen. The idea came from their frustration with integrating multiple analytics tools — every time they wanted to try a new tool, they had to write a new integration. Segment became the single API that routes data everywhere.
Twilio acquired Segment for $3.2 billion in 2020, making it one of the largest acquisitions in the customer data platform space. The deal gave Twilio a data backbone to complement its communication APIs, though the strategic fit has been debated since Twilio’s subsequent struggles.
The core concept is simple: instrument your app once with Segment’s SDK, and Segment handles sending that data to every tool in your stack — analytics, marketing automation, customer support, advertising, data warehouses. The platform supports over 400 integrations out of the box.
Segment’s Connections product handles the data routing. Sources collect data from websites, mobile apps, servers, and cloud services. Destinations send that data to downstream tools. Functions let you transform data in transit using custom JavaScript code.
Protocols provides data governance — you define a tracking plan specifying what events your app should send, and Segment validates incoming data against that schema. This prevents the data quality problems that inevitably arise when multiple teams instrument events independently.
Segment Unify builds unified customer profiles by stitching together anonymous and known user identities across devices and channels. This identity resolution capability is what moves Segment from a data routing tool into a true customer data platform.
For companies managing data across dozens of SaaS tools, Segment eliminates a significant amount of integration plumbing.
