All major search engines, such as Google, Bing and Yahoo, show the best search results that show and classify web pages and other content, such as videos or local lists, based on the most relevant user criteria. Payment will not be a paid search ad. As an internet marketing strategy, SEO considers search engine operation, computer programmed algorithms that dictate search engine behavior, search terms, or keywords entered into search engines and search engines. Site optimization may include content modification, content addition, HTML usage, and encoding linking to increase relevancy with certain keywords and remove barriers to activity index search engines. Advertising a website to increase the number of backlinks or incoming links is another SEO tactic. Until May 2015, mobile search had surpassed computer research. In 2015, it was reported that Google is developing and promoting mobile search as a key component of future products. In response, many brands are starting to look differently at Internet marketing strategies