Verkkofurthermore, due to rapid advance in technology and web proliferation, creating a web search engine today is very different from three years ago. This paper provides an. Google is designed to crawl. Verkkoin this paper, we present google, a prototype of a large scale search engine. Google is designed to crawl and index the web efficiently, using limited disk storage. This paper describes the underpinnings of the google search engine. The paper presents the initial google prototype and describes the. Verkkothe purpose of the chapter is to describe the techniques that are at the core of today's search engines (such as google 1, yahoo! 2, microsoft live search.