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Telefonica SA, operating under the ticker TEF, is a multinational telecommunications company headquartered in Madrid, Spain. Founded in 1924, the company offers a wide array of services including fixed and mobile telephony, broadband, and digital television to customers across Europe and Latin America. Telefonica is also engaged in digital services such as cybersecurity, IoT, big data, and cloud solutions, catering to both individual consumers and business clients.

Arista Networks is a networking equipment provider that primarily sells Ethernet switches and software to data centers. Its marquee product is its extensible operating system that runs a single image across every single one of its devices. The firm operates as one reportable segment. It has steadily gained market share since its founding in 2004, with a focus on high-speed applications. Arista counts Microsoft and Meta Platforms as its largest customers and derives roughly three-fourths of its sales from North America.