QUOTE(ukseo @ Jan 22 2014, 02:05 PM)

As an Internet marketing strategy, SEO considers how search engines work, what people search for, the actual search terms or keywords typed into search engines
SEO is done solely to improve your keyword rankings in various search engines. This helps people to search anything through search engines. So webmasters always try to rank their websites in the top searches of Google and other search engines, so that their websites are most visited and gets popularity. This helps in increasing the business also.