SEO is a technique by which people thoroughly investigate the technical habits of search engines and their functional characteristics that make a page more relevant than another and make it appear at the top of search results. To put it more simply, it is a process, dedicated to discovering and practicing the methods that can position a website at the top of search results of online search engines.

The SEO professional is continually investigating sensitive changes in the algorithms of search engines, mainly Google, and performance of websites based on this algorithm. Depending on the results of this research, professionals discover methods through which they can place a website among the top ten search engine results. Since Google is currently the most successful search engine, most SEO professionals are concentrated on getting a website at the top of Google search results.

The SEO professionals should be well versed in different concepts such as backlinks, Long Tail Keyword, Page Rank, internal code and traffic statistics etc. In additional to evaluating the technical aspect related to optimizing a website, they also evaluate its human aspect, i.e. they analyze and evaluate the behavior of the visitors to determine the different methods that will help in increasing the popularity of a website.

Google Panda, which is the indexing software of Google, gives more importance to those websites which are popular with the people and indexes these sites more frequently than others. Google has introduced a ‘+’ button which lets the user to vote for those sites which are liked by them. It also gives an option to the user to block different sites based on their preference. This data is utilized by Google Panda is determining the ranks of websites.