The Ethernet for Scale-Up Networking (ESUN) Alliance officially launched at the 2025 Open Compute Project (OCP) Global Summit, uniting North America’s AI heavyweights, including OpenAI, Meta, AMD, Nvidia, Microsoft, and Broadcom. Its goal is to create an open Ethernet interconnect standard to address AI chip connectivity fragmentation and redefine global AI infrastructure. The collaboration marks a rare alignment across major rivals in pursuit of interoperability.