A URL scheme is a way to define how a specific type of resource can be accessed on the internet. It typically starts with a protocol identifier, such as HTTP or HTTPS, followed by a domain name and optional paths or parameters. URL schemes help browsers and applications understand how to handle different types of links, directing users to web pages, files, or services. In addition to standard web protocols, custom URL schemes can be created for specific applications, allowing them to be launched directly from a link. For example, a mobile app might use a URL scheme like myapp:// to open specific content within the app, enhancing user experience by providing seamless navigation.