Arista Networks is a provider of networking equipment, primarily supplying Ethernet switches and software for data center environments. Its flagship offering is EOS, an extensible operating system that runs a single software image across all of its devices. The company operates as one reportable segment and has consistently expanded its market share since its founding in 2004, driven by a focus on high-speed networking applications. Microsoft and Meta Platforms are its largest customers, while approximately three quarters of revenue comes from North America.