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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 5792 reference ratings
4.7/5.0 (5792)
  • Summer 2026 Market Leader A/B Testing Software
  • Fall 2025 Market Leader Content Marketing Software

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290Testimonials

  • "Due to the annuity nature of subscription revenue, the insights from our three primary experiments could potentially generate a forecasted 20x return on investment."

  • "What we found along the way was that incoming requests were unstructured, missing key information, or not easy to understand. It required multiple meetings with stakeholders to gather the data, …

  • "We have a hypermodern website built on Optimizely and InRiver. We’re now well prepared and adaptable ahead of Piab’s future growth."

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387 Case Studies

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203 Customer Videos

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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.