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 5398 reference ratings
4.7/5.0 (5398)
  • Market Leader 2025 2025
    Fall 2025Market LeaderContent Marketing Software
  • Market Leader 2025 2025
    Summer 2025Market LeaderA/B Testing Software

Featured Testimonials

  • "Optimizely’s experimentation platform is the complete solution for A/B testing and feature flagging. It satisfies both an engineering team that needs robust SDKs and APIs to build complex experiments, and non-technical users to create and view the results of their own experiments. It satisfies both ends of the spectrum and is the complete solution in my mind."

  • "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, and in some cases created confusion about process flow, review, and approvals. In addition, much of the work was handled offline, with key details locked in documents no one could find or access."

  • "Optimizely is an extremely powerful, yet simple tool to use. Our team is now empowered to constantly review and experiment with different aspects of the customer experience. Optimizely is helping us to remove the element of guesswork that was previously needed. This guesswork has now been replaced with data-driven results which allow us to deliver seamless, omnichannel experiences."

Featured Case Studies

  • Gerrie Electric powers a digital B2B transformation

  • How Admiral's strategic approach and switch from Oracle Maxymiser increased internal efficiency, testing velocity and conversion rate optimisation

  • Website Optimization Yields a Six-Figure Impact in Online Revenue

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.