This document discusses search engine marketing and optimization. It begins with defining search engines and how they work by indexing web pages and returning relevant results based on algorithms. It then defines search engine marketing as a form of internet marketing aimed at increasing website visibility in search results. Key tactics discussed include search engine optimization through on-page optimization and link building, as well as pay-per-click advertising. The document provides tips for implementing both SEO and pay-per-click campaigns and compares their advantages.