The standardization body responsible for defining protocols for the internet is the Internet Engineering Task Force (IETF). IETF develops and promotes voluntary internet standards, particularly those related to the TCP/IP protocol suite. By focusing on standardization, IETF enables interoperability and facilitates communication across different systems and networks worldwide. This body plays a crucial role in the evolution of internet technologies, ensuring that advancements align with user needs and maintain a coherent framework for the global internet community.