Jayshree Ullal

Jayshree Ullal has served as President and CEO of Arista Networks since 2008, transforming a small networking startup into one of the technology industry's most successful companies with a market capitalization exceeding $70 billion. Arista designs and sells high-performance Ethernet switches and routers used in cloud data centers, enterprise networks, and increasingly, AI training clusters. The company's customers include the world's largest cloud and AI companies — Microsoft, Meta, and other hyperscalers. Ullal's competitive strategy was revolutionary: rather than building proprietary networking hardware like Cisco, she built Arista around a software-defined networking approach with the Extensible Operating System (EOS). This Linux-based network operating system, combined with merchant silicon-based hardware, delivered better performance, reliability, and programmability than incumbent solutions at lower cost. Arista captured the cloud data center switching market from Cisco. Her key decisions involve AI networking strategy (as AI training clusters require massive network bandwidth between GPUs), 800G/1.6T Ethernet technology development, campus networking expansion (competing with Cisco in enterprise), and navigating the increasing concentration of revenue among a small number of hyperscale cloud customers. Arista is one of the most direct beneficiaries of AI infrastructure spending.