Optimizely

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Read 290 Optimizely reviews and testimonials from customers, explore 363 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
  • 363 Case Studies View
  • 203 Customer Videos View
Customer Rating Review Score based on 5415 reference ratings
4.7/5.0 (5415)
  • Fall 2025 Market Leader Content Marketing Software
  • Summer 2025 Market Leader A/B Testing Software

More from Optimizely

Featured Testimonials

  • “At Fullscreen, our approach is unique in that we have created an entertainment experience around young social media stars whose fans are insanely dedicated and want to be a part …

  • "We want to focus on optimizing our mobile app and engage with our customers there, so their experience is optimized however they want to engage with us. We seek to …

  • "People are starting to come to me and say ‘we want to test this’ and opinions are starting to fly around. It’s beginning to take hold that the data will …

Featured Case Studies

  • IBT Industrial builds industry leading ecommerce platform with Optimizely

  • How charity water boosts donation size

  • Stratco Australia's new platform has a 50% faster page load time

Featured Customer Videos

  • How Atlassian uses experimentation to drive their business
  • Harvard Business School - Customer Success Story (Stefan Thomke - William Barclay Harding Professor of Business Administration)
  • Dura-Line - Customer Success Story (Tanya kanczuzewski - Senior Marketing & Communication 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 363 businesses that use Optimizely.

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