Optimizely is the world’s leading experimentation platform that empowers marketing and product teams to test, learn and deploy winning digital experiences, every time.

Optimizely enables businesses to deliver continuous experimentation and personalization across websites, mobile apps and connected devices.

Optimizely was founded in January 2010 by Dan Siroker and Pete Koomen. The company's headquarters are in San Francisco, California with offices in Amsterdam, Netherlands, Cologne, Germany, London, United Kingdom and Sydney, Australia.

Optimizely platform technology provides A/B testing tools, in which two versions of a web page can be compared for performance, and multivariate testing. Optimizely also enables personalization, which may be used for making data-driven decisions. The personalization capability can be used for serving online advertising.

Optimizely's experimentation platform is called Optimizely X, with tools for web experimentation, personalization, recommendations, mobile, full stack and over-the-top content. The optimization is delivered in a software as a service (SaaS) model.


Optimizely is backed by leading global investors including Battery Ventures, Andreessen Horowitz, Goldman Sachs Private Captial, Google Ventures, Benchmark, Bain Capital Ventures, & InterWest Partners among others. The company raised $50M in it's latest "Series D" round on June 18, 2019. This brings Optimizely's new total funding to $251.2M to date.


Optimizely has received multiple awards and recognition such as: "Red Herring Top 100 North America 2013 Finalist", "Gartner's Cool Vendors in Web Computing 2013", "San Francisco Business Times 2014 - 2019 as one of the “Best Places To Work In The Bay Area,” and many more.



  • Year founded: 2010
  • Funding Info: $251.2M in 7 Funding Rounds (Last Funding Type: Series D)- Optimizely has also acquired Synference & Experiment Engine to date.
  • Yearly Revenue: $100M-$200M (2018)
  • Employee Size: 501-1,000
  • Business Valuation: NA
  • City/Town: San Francisco
  • State: California
  • Country: United States
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