ACM announced that the 2022 Turing Award has been awarded to Bob Metcalfe, the inventor of Ethernet. Metcalfe, a computer scientist at Xerox Palo Alto Research Center (PARC) in 1973, wrote his famous memo on the “Broadcast Communications Network.” The first version of Ethernet was designed to transmit at 2.94Mbit/s, more than ten thousand times faster than the terminal network it was designed to replace. The earliest implementations of Ethernet were based on coaxial cables, but the memo envisions a future “communication over Ethernet” that accommodates future innovations in communication media such as twisted pair telephones, fiber optics, Wi-Fi, and more. The memo laid the groundwork for Ethernet as we know it today. After Metcalfe left PARC, he founded 3Com, which promoted the standardization of Ethernet.