An RFC, or Request for Comments, is a type of publication used to develop and share standards, protocols, and guidelines related to the internet and computer networking. These documents are created by the Internet Engineering Task Force (IETF) and other organizations to facilitate communication and collaboration among developers and engineers. RFCs cover a wide range of topics, including network protocols, file formats, and best practices for software development. Each RFC is assigned a unique number and can be referenced by that number, making it easier for professionals to find and discuss specific standards or proposals.