Arista Networks Inc. develops and markets high-speed networking infrastructure, primarily serving cloud service providers, enterprise data centers, and AI networking environments. The company operates through two main segments: Products, which accounts for the vast majority of revenue through the sale of Ethernet switches and routers (ranging from 10GbE to 800GbE speeds), and Services, which provides post-contract support and software subscriptions. Arista's competitive advantage is anchored by its Extensible Operating System (EOS), a programmable, state-based software stack that allows for automated, low-latency network management. Geographically, while the United States accounts for the majority of its sales, the company maintains a growing international footprint across the Americas, EMEA, and APAC regions. Arista holds a dominant market position in high-speed data center switching, competing directly with legacy incumbents like Cisco and serving major cloud titans such as Microsoft and Meta.