My personal favorite is Optimize 360. It allows you to run A/B multivariate tests, as well as personalization campaigns on your site. What really makes it stand out from the crowd is that as a marketer, you can define valuable audiences in Google Analytics, and then seamlessly import those audiences into Optimize.
In my recent Marketing Land article, I explain why analyzing test results using the full power of Optimize 360 is such a big deal.
Nick Iyengar
Nick is Vice President of Analytics at Cardinal Path, where he is
responsible for the commercialization and delivery of Google Analytics and related services. When not working with clients, Nick authors original research, articles and blog posts, and speaks at conferences around the world. He is an alumnus of the 2023 college football national champion University of Michigan.