URI is the technical term used for identifying resources on the Internet. It identifies the name and the location of resources in a uniform format. Universal Resource Identifiers provide a standard way in which to access resources across networks or over the Internet. They are also frequently used by web browsers and Peer-to-Peer file-sharing software in order to locate and download relevant files. A great way of explaining URIs as set out by the W3C: The Internet has many points of content, such as images, sound clips, text and programs, and the URI is the way you identify them.