SEO, or Search Engine Optimization, refers to the process of improving the visibility of a website or a web page in a search engine’s organic (or “free”) results. In simple terms, SEO is about making your website more attractive to search engines, helping it appear higher in search results when users type in relevant queries. Search engines, like Google, Bing, or Yahoo, have complex algorithms that they use to determine which websites are the most relevant for the user’s search query. SEO techniques aim to communicate the relevance of your website’s content to these search engines, which can lead to higher rankings in search results.