In 2009, a preview of Caffeine was released. The goal was to drastically change the search indexing infrastructure.
With the official launch in 2010, Google called it “whole new web indexing system” generating 50 percent fresher results than their previous index. “Caffeine” gave the search engine a major jolt (hence the name Caffeine) increasing the speed of crawling pages, speeding up how fast the search engine delivered results, the accuracy of results in relation to the search term and more.