A/B Experiment Implementation

A/B test execution and UI/UX changes based on prioritized hypotheses. Covers test design, statistical setup, implementation in your testing tool, and analysis with documented winners and learnings.

What's included

  • Hypothesis prioritization based on impact, confidence, and effort
  • Test design with primary metric, guardrails, and sample size
  • UI/UX changes built and QA'd across devices
  • Implementation in your testing tool (PostHog, VWO, Optimizely, GA4 experiments)
  • Statistical setup with proper traffic allocation and runtime
  • Monitoring for sample ratio mismatch and data quality issues
  • Results analysis with documented winners, losers, and learnings
  • Shipping recommendations and follow-up test ideas

Why it matters

Most CRO programs stall because tests are poorly scoped, underpowered, or never properly analyzed. You get a steady pipeline of decision-grade experiments with a documented record of what works, what doesn't, and what to try next.

What clients say

Tomas is an exceptional analytics expert. He helped us migrate a client from Universal Analytics to GA4, including creating GTM tags/triggers/variables, ecommerce tracking setup, other event tracking setup, and even built out funnels. This client had a unique shopping/enrollment checkout process, but the migration and configuration was launched without any issues. Highly recommended for any analytics work.

Brian Thomas Clark

Wow! I can't say enough about the team at SmartMetrics! They are super fast, intelligent, and helpful in understanding and addressing your problem. I have worked with them multiple times on different accounts. I highly recommend them! I will continue to use them going forward! Big shout out to Tomas for all his help!

Anna Crowe

We worked with Tomas to set up some tracking for marketing analytics on our website. I'd recommend working with him - he's communicative, efficient, and effective.

Julia

Dyneti

Work with Tomas

Founder, SmartMetrics

20 years in marketing, CRO, CRM, and analytics, now with AI systems layered on top.

700+
companies served
20 yrs
marketing & analytics
Direct
no account managers
Salesforce Certified Platform App BuilderZoho Creator Certified Developer Professional

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Client testimonials