THE CLASSIC DEFINITION
Search Engine Optimization, known with the acronym SEO, is the process of improving traffic and exposure to a website via search engines to get the website ranked highly in the resulting search results pages. It helps to build an online presence that is bigger and better than just slapping a static website up on the Internet and hoping that some people drop by the site. It is a strategy whereby how you create the site, what you do to promote it, and how you analyze the results of those actions that help the website owner to develop bigger and better online exposure.
 
This 13 page E-book goes more in depth about Google starting it, how keyword usage has changed, how to select keywords and more.
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