This document provides an overview of basic SEO concepts. It discusses what SEO is, why it is important to understand for digital content creation and distribution. Specifically, it covers optimizing content for search engines like Google as well as semantic search. It also explains Google's Knowledge Graph and Knowledge Vault which are databases that surface structured information from sources on the web to enhance search results. The document emphasizes that SEO is important for finding and interacting with an online audience across different devices and platforms.