Which organization developed the Ethernet protocol?

The Ethernet protocol, which is a foundational technology for local area networks (LANs), was developed by the Institute of Electrical and Electronics Engineers (IEEE). Specifically, the IEEE 802.3 standard defines the operation of Ethernet networks, detailing how data is physically transmitted over a network, the frame format, media access control, and more. This standardization played a crucial role in enabling the widespread adoption and interoperability of Ethernet technologies across different manufacturers and devices.

Although other organizations like ISO (International Organization for Standardization), IETF (Internet Engineering Task Force), and ANSI (American National Standards Institute) are involved in various standards and protocols within the realm of networking and computing, it is the IEEE that is recognized for developing and defining the Ethernet protocol specifically.