This document provides an overview of search engine optimization (SEO). It discusses what SEO is, the importance of organic search results, and outlines the typical SEO process. This includes initial keyword research, on-site and off-site optimization, monitoring rankings and traffic. Technical aspects of SEO like keyword analysis, link building, code validation and social media optimization are also reviewed. The document concludes with discussing how to measure SEO success through metrics like increased traffic, rankings and revenue.