A tag is an attribute that is associated with a group of content. It is used to describe the content it represents as in the case of a hashtag or SEO tags that provide an overview of what an image or text is about. Tags make it easier for web users to locate curated content and view the topics on a page at a glance.
Benefits of tagging: Tagging is a great way to improve the organisation and discovery of content on your website. There are many benefits to tagging, including better engagement and improved SEO. If you’re looking for a great way to improve your website, consider tagging your content.
All you need to know about the web tags : Tags