What you'll learn:
- Conduct proper optimization research based on data, users, science and own expertise
- Set up, track and analyze successful A/B tests to realize continuous optimization
- Get a deeper (psychological) understanding of your website visitors
- Generate valuable insights and prioritize them to increase the percentage of A/B tests winners
- Ability to analyze websites and find conversion killers
- Obtain reliable data from A/B tests for trustworthy and valid analyses
- Draw the right learnings from A/B tests
- Keep increasing your conversion rates by mastering the CRO process
✓ Updated in 2025; now includes AI for Conversion Rate Optimization
✓ Bestseller in the Udemy “Conversion Rate Optimization” category
✓ 14,000+ students; one of the most popular CRO courses worldwide
Why take this course?
This course gives you a complete, practical Conversion Rate Optimization (CRO) blueprint, based on 15+ years of experience, real client work, and the best books and scientific insights out there.
You'll learn how to:
Increase your conversion rates and improve key KPIs
Discover why users don’t convert using data and user research
Run stronger experiments with clear hypotheses
Use AI to speed up every step of the process
Make smarter, more confident decisions
Set up a scalable process and become more successful in your work
This course is packed with templates, examples, and exercises. And it doesn’t matter what tools you use, all frameworks apply to any research, analytics, or testing tool.
What students say
“Ruben takes you from 0 to expert-level CRO specialist. STRONGLY RECOMMENDED!”
“Hands down one of the best courses on Udemy. Super clear, very practical, and fun to follow!”
“One of the most rigorous and comprehensive courses I’ve taken in my career.”
“Ruben is a natural teacher. I’ll be going through all of his courses.”
“This is the best course I’ve taken so far on Udemy. I enjoyed every minute and learned so much.”
What’s inside the course?
You’ll follow the full Conversion Rate Optimization / experimentation journey, divided into 5 parts:
> Part 1: Research
Learn how to combine data, user research, expert reviews, and behavioral psychology to find your biggest opportunities. You'll learn how to set up and use Google Analytics, run interviews, analyze session recordings, and more.
> Part 2: Insights & Ideation
Turn research into actionable insights. Write strong hypotheses, prioritize test ideas, and build a high-impact roadmap. You'll get a unique prioritization framework and Airtable setup to get started immediately.
> Part 3: A/B Testing
Learn how to properly set up, launch, and monitor experiments, with best practices for tracking, QA, and tools. I’ll also show how to use pre-test calculations like MDE to run more impactful tests.
> Part 4: Analyze & Learn
Master the analysis process: find statistical significance, avoid false positives, and uncover insights you can share across your organization. Includes tips for using GA4 and other analytics tools.
> Part 5: Make it Stick
Learn how to communicate results, improve stakeholder buy-in, and grow your career as a CRO specialist. Includes tips for involving colleagues, experimentation culture, and personalization.
Who is this course for?
✓ Beginners entering the Conversion Rate Optimization or experimentation field
✓ Experienced specialists, marketers, analysts, UX, and product professionals who want to improve
✓ Freelancers, agencies, or in-house teams looking to scale testing
✓ Anyone who wants to run smarter experiments and make better decisions
Why learn from me?
I’m Ruben, a Conversion Rate Optimization/experimentation consultant and trainer with 15+ years of experience. I’ve led experimentation programs for global brands and coached teams across the world.
I’ve won multiple international awards, including the Experimentation Elite and Experimentation Culture Community Award.
I’ve helped over 20,000 students learn Conversion Rate Optimization and experimentation through my courses and newsletter.
I believe that if you find your passion in your work, you should also use it to help and inspire others. That’s why I’m here.
“I’ve taken other Conversion Optimization courses before, but this is the first that made me confident enough to apply what I learned right away.” Student review
What you get
8+ hours of content
Templates, tools, examples, and practical assignments
Lifetime access + all future updates
Ask me anything; I personally reply to every question
30-day money-back guarantee
If you're ready to increase your conversion rates, build a high-impact process, and grow your skills, this course is for you.
Join 14,000+ students and enroll today. Let's start optimizing.
