The Internet Engineering Task Force (IETF) is an open, international organization of network designers, operators, vendors, and researchers. It's dedicated to the development and promotion of Internet standards. Unlike many other standards organizations, the IETF is not a corporation and has no formal membership. Participation is open to anyone who has an interest in its work and its standards are developed through a consensus-driven process.

Here's a breakdown of the IETF's main roles:

  1. Development of Internet Standards: The most prominent function of the IETF is the development of Internet standards. These standards form the foundation for many of the technologies that power the Internet. They cover a wide range of areas including, but not limited to, transport protocols (like TCP/IP, application layer protocols (like HTTP and SMTP), network security protocols (like TLS and IPSec), and Internet architecture.
  2. Request for Comments (RFCs): The standards developed by the IETF are published as a series of documents called Request for Comments (RFCs). These are the official publications of Internet protocols, procedures, programs, and concepts.
  3. Working Groups: The IETF operates through a number of focused, topic-based working groups. These groups are organized into areas by subject matter (like routing, transport, security, etc.). Each working group has a charter that includes the scope of its work and the specific issues it will address.
  4. Interoperability Testing: Before a standard can be approved, the IETF requires proof of at least two interoperable implementations. This helps to ensure that the standards are practical, implementable, and likely to be adopted.
  5. Open Process: The IETF operates under a principle of "rough consensus and running code". This means that standards are developed through a process that is open to all and are based on the combined engineering judgement of participants and real-world testing of the protocols.

In essence, the IETF's role is crucial for the proper functioning and evolution of the Internet, providing the technical foundations that allow for the interoperability of Internet-connected systems and devices.

Other related organizations include ICANN and IANA.