Optimizely is an advanced Digital Marketing Platform and one of the key players in DXP area. Optimizely is addressed to mid-size market and e-commerce platforms. Yet, compared to Sitecore, Sitecore offers more versatility and scalability to cater even wider range of needs. Optimizely's platform includes Content Management, Commerce, Experimentation, and Feature Management capabilities. Originally known for A/B testing, Optimizely has expanded through acquisitions (including Episerver) to offer full DXP capabilities with strengths in experimentation, progressive delivery, and developer-friendly tools.