To help businesses test and take action, we launched our enterprise-class A/B testing and personalization product, Google Optimize 360.
http://optimize.google.com/
ref - https://www.blog.google/products/marketingplatform/analytics/this-is-not-a-test-google-optimize-now-free-for-everyone/
origin - https://www.pipiscrew.com/2018/09/google-optimize/ google-optimize