Search Engine (SE)
A Search engine is a website that collects information from other web sites and can respond with relevant web sites when a user searches for a specific request. For example, when a user searches for information on “How cold is the Arctic?”, the search engine reviews its database of websites and returns the web sites most relevant to temperature in the Arctic. Although easier said than done, online marketers work hard to ensure that when a user searches for information related to their product or service that their web site is one of the first results. The higher a web site ranks in the list of results, the more click-throughs they receive, and in turn the more revenue they earn from resultant sales.