In the mid- 1990s webmasters and content providers began optimizing websites for search engines.

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A second program, known as an indexer, extracts information about the page, such as content, location, keywords & links.

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Danny Sullivan says the phrase "search engine optimization" probably came into use in 1997.

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Sullivan credits Bruce Clay as one of the first people to popularize the term.

Website owners recognized the value of a high ranking and visibility in search engine results

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An opportunity created for both white hat and black hat SEO practitioners

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In 2015, reported Google developing and promoting mobile search as a key feature within future products.

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Brands began to take a different approach to their Internet marketing strategies.

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By 1997, search engine designers recognized that webmasters were making efforts to rank well in their search engine

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Search engine crawlers may look at a number of different factors when crawling a site.

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