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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  • 290TestimonialsView
  • 363Case StudiesView
  • 203Customer VideosView
Customer Rating Review Scorebased on 5243 reference ratings
4.7/5.0 (5243)
  • Market Leader 2025 2025
    Fall 2025Market LeaderContent Marketing Software
  • Market Leader 2025 2025
    Summer 2025Market LeaderA/B Testing Software

Featured Testimonials

  • "The conversion rate and the average buy is increasing more than the traffic. So we are converting customers that only bought physically before. They are buying more online."

  • ''It's about increasing a healthcare professional's awareness and understanding of a certain disease or treatment approach to do that effectively in an information saturated, crowded marketplace, we need to make content discoverable, and easy to consume in a timely fashion."

  • "Working with Optimizely Customer Success and their partners really allowed us to experience the full potential of testing and build a great case study for getting internal buy-in. The team we worked with was incredible extremely knowledgeable, fast, responsive and patient."

Featured Case Studies

  • Vergelijk.nl optimizes a central part of their e-commerce experience

  • Optos - Customer Case Study

  • Ecommerce team optimizes for 54% more revenue per visitor

Featured Customer Videos

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.