Tags refer to a categorization system used for large amounts of content and data. Similar pieces of content are tagged with the same “tag,” making it easier to organize content and find.
Tags are part of what is called metadata. Metadata provides information about other pieces of information. For example, geotagging adds geographical location metadata to an image or video.
Tags are useful for creators and users alike. In particular, Instagram brought us hashtags. Hashtags started off as their unique tagging system. Now, hashtags are integrated across almost all the social platforms.