Google Optimize

Was one of the most widely adopted A/B testing tools globally, primarily due to its free tier and deep Google Analytics integration, before being discontinued in 2023.

Google Optimize was a free web experimentation platform that helped marketers test different versions of page features and layouts in order to maximize conversion rates, but it ceased operation on September 30, 2023.¹ The tool supported a range of testing methodologies used by digital marketers, including A/B testing to compare page variants, multivariate testing to evaluate feature combinations, split URL testing to pit entirely different page designs against one another, server-side experiments that kept changes invisible to end users, and personalization capabilities that tailored experiences based on user behavior, demographics, and geography.¹ After discontinuation, many of its core capabilities were folded into Google Analytics 4 in conjunction with Google Tag Manager.¹ Challenges with modern web frameworks, privacy handling, multivariate behavior, server-side testing, and enterprise requirements were among the factors that ultimately led to its shutdown.² Google itself recommended Optimizely as a replacement in its sunsetting announcement, and similar tools such as AB Tasty, Shoplift, and OptiMonk have since filled comparable roles in the conversion optimization space.¹ Source 1: shopify.com — What Is Google Optimize? 5 Great Alternatives To Consider Source 2: convert.com — Google Optimize is Back? It's 2025 & ...