An organic search is a process by which World Wide Web users find web sites having unpaid search engine listings, as opposed to using the pay per click advertisement listings displayed among the search results. WWWs historical logo designed by Robert Cailliau The World Wide Web (WWW or simply the Web) is a global, read-write information space. ... A search engine or search service is a program designed to help find information stored on a computer system such as the World Wide Web, inside a corporate or proprietary network or a personal computer. ... Pay per click, or PPC, is an advertising technique used on websites, especially search engines. ...

The field of search engine optimization, (SEO), is concerned with maximizing the visibility of a web site by making its listings appear more frequently and more prominently in organic search results. Some businesses base their SEO strategies on the successful insertion of their web site listing(s) into organic search results for various popular keywords. Search engine optimization (SEO) is a set of methods aimed at improving the ranking of a website in search engine listings, and could be considered a subset of search engine marketing. ... In computer science, a keyword is an identifier which indicates a specific command. ...