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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 5677 reference ratings
4.7/5.0 (5677)
  • Fall 2025 Market Leader Content Marketing Software
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  • Summer 2025 Market Leader A/B Testing Software
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290Testimonials

  • "Optimizely removed every roadblock to landing page testing and allows us to quickly make user-driven decisions."

    SlideRocket

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

    Anette Lantz Digital Experience Manager

  • "Virtually no change will go live on the website just like that. Everything is tested."

    Sebastian Fallert General Manager, Secret Escapes
289 more testimonials currently locked

387 Case Studies

  • Marmon Link moves beyond a website to transformative experiences with Optimizely B2B …

    Jennie Stenback Vice President Marketing and eCommerce

  • How Eastern Industrial Supplies supports 400,000+ product SKUs

    Dennis Karpinski Director of E-commerce and Business Analysis

  • Distributor Corporation of New England sees 200% increase in AOV

    Bill Fiore Director of Operations
386 more case studies currently locked

203 Customer Videos

  • VISA eliminates guesswork with experimentation
    Play Video
    Roger Chang Decision Scientist
  • Nordnet - Customer Success Story(Karsten Franke - Growth Marketing Manager)
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    Karsten Franke Growth Marketing Manager
  • Autotrader uses Optimizely to adapt to changing consumer behavior and deliver a better digital experience
    Play Video
    Marcus Dame Senior Director, Product Management
202 more videos currently locked

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.

FeaturedCustomers has 1,923,475+ validated customer references including reviews, case studies, success stories, customer stories, testimonials and customer videos that will help you make better software purchasing decisions.