Google Website optimization is also called as search engine optimization website optimization is a phrase that describes the procedures used to optimize or to design a website to rank well on search engines..

Google is a service that gives you a script to put in place, then this script tests your site and give you tips to optimize it for search engines

Google Website Optimizer is a free website optimization tool that helps online marketers and webmasters increase visitor conversion rates and overall visitor satisfaction by continually testing different combination of website content. Google Website Optimizer can test any element that exists as HTML code on a page including calls to action, fonts, headlines, point of action assurances, product copy, product images, product reviews, and forms. It can be used at multiple stage in the conversion funnel.

This is a online tool by Google. you can know detail information how to optimize your site

it is a assistance by the look for engines that gives you a program to be put on your website then this program assessments your website and provides you tips to boost it for look for engine