Optimizely

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Read 290 Optimizely reviews and testimonials from customers, explore 387 case studies and customer success stories, and watch 203 customer videos to see why companies chose Optimizely as their A/B Testing Software

Optimizely is the world’s leading experience optimization platform, providing website and mobile A/B testing and personalization for the world’s leading brands. The platform’s ease of use and speed of deployment empowers organizations to conceive and run experiments that help them make better data-inspired decisions. Optimizely meets the diverse needs of thousands of customers worldwide looking to deliver connected experiences to their audiences across channels. To date, those customers have created and delivered more than 30 billion optimized visitor experiences.

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  • 290 Testimonials View
  • 387 Case Studies View
  • 203 Customer Videos View
Customer Rating Review Score based on 5936 reference ratings
4.7/5.0 (5936)
  • Summer 2026 Market Leader A/B Testing Software
  • Fall 2025 Market Leader Content Marketing Software

More from Optimizely

Featured Testimonials

  • "We had tested 50% of the new website components and felt confident that they would perform well. On launch day we could focus on making sure everything went smoothly and …

  • "From day one, the team at CROmetrics has been great to work with, and they, along with the Optimizely solution, continue to be absolutely instrumental in helping us to implement …

  • "We needed a brand-new approach for 2021 to meet the needs of the customer. We know that over half of our enrolled students had attended an open day when considering …

Featured Case Studies

  • Laerdal Medical Resuscitating its website with digital transformation

  • KappAhl converts physical customers to online shoppers

  • NS&I revamp digital touchpoints with experimentation

Featured Customer Videos

  • How One Big Win Kickstarted a Program
  • GMHBA - Customer Success Story(Caghan Emirzade - Digital Product Manager)
  • Beyond Bank - Customer Success Story(Christopher Filosi - Product Manager)

Additional Optimizely Information & Resources

Read Optimizely Reviews, Testimonials & Customer References from 290 real Optimizely customers.

Browse Optimizely Case Studies, Customer Success Stories, & Customer References from 387 businesses that use Optimizely.

Watch Optimizely Customer Videos to learn why 203 businesses chose Optimizely.