SEO is an acronym that stands for search engine optimization. It is the process of increasing the quality and quantity of website traffic by increasing the visibility of a website or a web page to users of a web search engine. SEO refers to the improvement of unpaid results and excludes direct traffic/visitors and the purchase of paid placement.
Optimizing a website may involve editing its content, adding content, and modifying HTML and associated coding to increase its relevance to specific keywords and remove barriers to the indexing activities of search engines like Google, Yahoo, etc. Promoting a site to increase the number of backlinks, or inbound links is another SEO tactic.