Head Tags sit within HTML files and contain metadata (or data about data) as well as script calls, which direct browsers to understand which scripts are being used on the website.
When coding, a head tag will be placed as an element between the opening <HTML> and <body> tags, at the very beginning of the HTML file. The information placed here is not displayed to ordinary web users. Instead, it’s there to be read by search engines.
The reason Head Tags are so important for SEO is because they contain data, such as a page’s title, its description, and other instructions to search engine bots, that help a page get accurately indexed and listed on search engine results pages.