Google’s search engine cache is nothing more than a stored copy of all indexed web pages in its cache. This solution is a kind of lifeline for websites which are temporarily out of order, but which plan to remain online. This is because using Google’s cache not only allows you to quickly view basic page data such as the title or description, but also to see the last version of the site that was saved by the search engine.
It should come as no surprise that if a page has been updated or upgraded after Google has made a copy of it, the two versions may differ. To view the duplicate created, click the green triangle behind the site address in the search results.