When you built your website, you likely created it with your users in mind, trying to make it easy for them to find and explore your content. One of those users is a search engine, which helps people discover your content. SEO—short for search engine optimization—is about helping search engines understand your content, and helping users find your site and decide whether they should visit your site through a search engine.
Google Search is a fully automated search engine that uses software known as web crawlers that explore the web regularly to find pages to add to our index. In fact, most pages listed in our results aren’t manually submitted for inclusion but are found and added automatically when our web crawlers explore the web. This document explains the stages of how Search works in the context of your website. This base knowledge can help you fix crawling issues, get your pages indexed, and learn how to optimize your site’s appearance in Google Search.