Google Analytics 4 is the free web analytics tool that helps you analyze your website and mobile app traffic. Feed GA4 audiences into CustomFit and send experiment exposures back, so analysis lives where your team already works.
Import GA4 audiences and conversion events; push experiment exposure back as GA4 events so analysis lives where your team already works.
Server-side event forwarding via the GA4 Measurement Protocol — accurate, ad-blocker-resilient experiment data.
Slice any GA4 Exploration by CustomFit experiment cohort to see lift by channel, device, and landing page.
Google Analytics 4 captures what's happening on your site. CustomFit.ai is where you act on it — building cohorts, running A/B tests, and personalizing experiences without engineering tickets. Together, they close the loop from observe → hypothesize → test → ship → 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 Google Analytics 4 + CustomFit.ai —.
Pull Google Analytics 4 + CustomFit.ai — 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 Google Analytics 4 + CustomFit.ai — report by experiment cohort.
Observe in Google Analytics 4 + CustomFit.ai —, hypothesize and test in CustomFit, ship the winner, and feed results right back — no spreadsheets in between.
Google Analytics 4, which tracks web and event analytics, connects natively to CustomFit.ai. Once linked, Google Analytics 4 data flows into CustomFit to build audiences and target experiences, while experiment exposure and conversions flow back to Google Analytics 4 — no spreadsheets and no glue code, just one connected loop between your analytics and your storefront.
Find Google Analytics 4 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.
One source of truth for experiments.
Target tests at analytics segments.
Act on insights without exports.
The Google Analytics 4 integration connects your Google Analytics 4 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, Google Analytics 4 and CustomFit stay in continuous two-way sync — audiences and events flow into CustomFit, and experiment exposures and conversions flow back to Google Analytics 4.
For D2C and ecommerce brands, pairing Google Analytics 4 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 Google Analytics 4 integration adds no visible latency and keeps Core Web Vitals healthy.
Setting up the Google Analytics 4 integration takes minutes, not sprints. Connect via OAuth or an API key, map the fields and events you care about, and turn on sync — 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 Google Analytics 4 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 Google Analytics 4 integration adds negligible latency and your Core Web Vitals stay green.
No. The CustomFit SDK is loaded asynchronously and never blocks page render. GA4 events are batched and sent server-side where possible.
Yes — variant_id appears as a custom dimension so you can slice every existing GA4 report by experiment cohort.
Most teams connect Google Analytics 4 in minutes — 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 — SOC 2 Type II, ISO 27001, GDPR and CCPA aligned.
Close the loop between GA4 insight and on-site action.
Turn GA4 audiences into live CustomFit experiences without rebuilding segments.
Send experiment exposure to GA4 so every Exploration can be sliced by variant.
Target GA4-identified drop-off steps with focused experiments and measure recovery.
Free trial includes every integration. Live in 5 minutes.