A website audit is a process of crawling down at every corner of your webpage to look for issues or problems that need to be addressed or fixed. Often times, a good website audit tells you if your website is in need of an update or rebranding.
Multivariate testing is a process of concurrently testing multiple elements or variables of a page or landing page. The goal of multivariate testing is to determine which combination of variable perform best out of all combinations performed.