This document discusses the essential components of a successful search engine optimization (SEO) campaign: text, links, and popularity. It explains that web pages need keyword-rich text placed strategically in HTML tags. Pages also need internal links and external links from other relevant and popular sites. Maintaining high click-through rates and time spent on pages boosts popularity. Proper on-page optimization of text, links, and popularity factors is necessary to perform well across search engines over the long run.