Metadata is information that describes, identifies, or provides context about another piece of data. It helps systems understand what data represents, where it came from, when it was created, how it should be processed, and how it can be organized or retrieved. Although metadata is not usually the primary content itself, it makes digital information easier to manage, search, interpret, and use.
For example, a digital photograph can contain metadata such as the date and time it was captured, camera settings, file format, image dimensions, and sometimes location information. Similarly, a video file may include details about its duration, resolution, codec, and creation date. Metadata is widely used in databases, cloud storage, digital media, websites, artificial intelligence, cybersecurity, and data management to improve organization, discovery, interoperability, and analysis.
