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2026-05-23 · Segments Team

Welcome to Segments

Why we built another Customer Data Platform — and what makes it different.

Why another CDP?

Every product team eventually ends up gluing together half a dozen tools just to answer one question: what did this user do, across every channel, and when?

You start with Google Analytics. Then a product analytics tool. Then a marketing automation platform. Then a data warehouse for the "real" numbers. By the time you ship a meaningful onboarding email, your data is duplicated in five places — and out of sync in at least three of them.

Customer Data Platforms (CDPs) were supposed to fix this. And to a point, they have. But the incumbents are closed-source, billed per MTU, and assume your data lives in their cloud.

We think there's a better way.

What Segments is

Segments is an open Customer Data Platform. It does three things well:

  1. Collect — ingest events from web, mobile and backend services through a single, Segment-compatible API.
  2. Unify — stitch events into a single customer profile using deterministic identity resolution.
  3. Activate — pipe segments to email, push, ads, warehouses and webhooks in real time.

Everything runs on technology you can audit: Postgres, Kafka, Redis, ClickHouse, Centrifugo. You can self-host it, or use our managed cloud.

What's next

Over the coming weeks we'll publish deep-dives on:

  • The architecture behind sub-second event propagation
  • How we model identity resolution at scale
  • Migrating from Twilio Segment without downtime

Stay tuned — and if you'd like to try it, create a free account.