SEO is the process of improving the volume or traffic to a website or a page. SEO is the most technical and important part of Web Marketing. A deep analysis of a website needs to be done
before working on SEO because it plays a major role in virtual web-world. Every website/webpage needs SEO to be indexed/rank well in search engines like Google, yahoo, msn, alexia etc.
Search engines crawl the Web, looking at particular site items (mainly text) to get an idea what a site is about. Search Engines perform several activities in order to deliver search results – crawling, indexing, processing, calculating relevancy, and retrieving.