Twilio Segment is a customer data platform (CDP) that helps you collect, clean, and activate your customer data. As both a Segment source and destination, CustomFit keeps one identity and one schema across web, app, and server.

CustomFit works as both a Segment source and destination β events flow in, exposures flow out, one schema.
Segmentβs identity resolution means CustomFit targets the same user across web, app, and server.
Activate warehouse audiences piped through Segment directly in CustomFit experiences.
Segment captures what's happening on your site. CustomFit.ai is where you act on it β building cohorts, running A/B tests, and personalizing experiences without engineering tickets. Together, they close the loop from observe β hypothesize β test β ship β measure in days, not quarters.
Total transparency on the data we read and write. Every field is configurable, every event is logged, and you control retention.
Real plays that growth and CRO teams run the week they connect Segment + CustomFit.ai β.
Pull Segment + CustomFit.ai β cohorts and signals into CustomFit targeting, then personalize the storefront for each segment in real time.
Variant assignment and conversions flow back automatically, so you can slice any Segment + CustomFit.ai β report by experiment cohort.
Observe in Segment + CustomFit.ai β, hypothesize and test in CustomFit, ship the winner, and feed results right back β no spreadsheets in between.
Segment, which is a customer data platform, connects natively to CustomFit.ai. Once linked, Segment data flows into CustomFit to build audiences and target experiences, while experiment exposure and conversions flow back to Segment β no spreadsheets and no glue code, just one connected loop between your CDP and your storefront.
Find Segment in the CustomFit integrations catalog.
Connect via OAuth or an API key in minutes.
Choose what syncs in and what flows back.
Target experiences and tests on the synced data.
Activate CDP audiences on-site.
Target by unified traits.
Consistent audiences everywhere.
The Segment integration connects your Segment data to CustomFit.ai so growth and CRO teams can run A/B tests, personalize experiences, and measure revenue impact without engineering work. Instead of exporting CSVs or maintaining brittle scripts, Segment and CustomFit stay in continuous two-way sync β audiences and events flow into CustomFit, and experiment exposures and conversions flow back to Segment.
For D2C and ecommerce brands, pairing Segment with CustomFit closes the optimization loop: you observe behavior, form a hypothesis, build a test or personalized experience in a no-code editor, ship it, and measure the lift against real outcomes. Because evaluation happens at the edge before first paint, the Segment integration adds no visible latency and keeps Core Web Vitals healthy.
Setting up the Segment integration takes minutes, not sprints. Connect via OAuth or an API key, map the fields and events you care about, and turn on sync β every field is configurable, every API call is audit-logged, and you stay in control of data retention. Security is enterprise-grade: SOC 2 Type II, ISO 27001, GDPR and CCPA alignment, with encryption in transit and at rest.
Add the Segment connector from the CustomFit integrations catalog, authorize via OAuth or an API key, map your fields and events, and enable sync. Most teams are live in minutes with no engineering ticket.
Yes. Data is encrypted in transit (TLS 1.3) and at rest (AES-256), secrets are vaulted, every API call is audit-logged, and the integration is SOC 2 Type II, ISO 27001, GDPR and CCPA aligned.
No. CustomFit evaluates experiences at the edge before first paint, so the Segment integration adds negligible latency and your Core Web Vitals stay green.
All plans supported β Free, Team, Business, Enterprise.
Most teams connect Segment in minutes β authorize via OAuth or an API key, map your fields, and turn on sync. No engineering ticket required.
No. Every integration is included on all CustomFit plans; you only pay on matched monthly visitors, never per connector.
Yes. Data is encrypted in transit (TLS 1.3) and at rest (AES-256), secrets are vaulted, and every API call is audit-logged β SOC 2 Type II, ISO 27001, GDPR and CCPA aligned.
Yes. Every field and event is configurable, you choose which direction data flows, and you control retention.
CDP plays that keep one identity everywhere.
Activate reverse-ETL audiences piped through Segment directly in CustomFit experiences.
Use Segment identity resolution to target the same user across web, app, and server.
Send experiment exposure through Segment to every connected destination.
Free trial includes every integration. Live in 5 minutes.