Google was founded in 1998 by Larry Page and Sergey Brin while they were PhD students at Stanford University. They developed the PageRank algorithm to analyze the relationships between websites and determine relevance, which became the core of Google's search technology. Google quickly grew and now processes over a billion searches and 24 petabytes of user data daily. The company offers many free services like Gmail, Google Maps, and YouTube in addition to its core search engine. Google's mission is to organize the world's information and make it universally accessible and useful.