AT&T is a holding company. Through its subsidiaries, the company is a provider of telecommunications, media and technology services. The company's Communications segment provides wireless and wireline telecom, video and broadband services. The company's WarnerMedia segment includes media and entertainment businesses that principally develop, produce and distribute feature films, television content, and other content globally; and operate digital media properties. The company's Latin America segment provides entertainment services in Latin America and wireless services in Mexico. The company's XANDR segment relies on using data from its customer relationships, to develop digital and video advertising that is relevant to consumers.

Frontier Communications is a holding company. Through its subsidiaries, the company is a provider of communications services. The company conducts business with both consumer and commercial customers. For consumer customers, the company provides broadband, video, voice and other services and products. The company delivers these services over a combination of fiber and copper-based networks. The company's commercial customers consist of: small, medium and larger enterprise customers, whereby the company provides services including broadband service, Ethernet service, circuit-based services, SD-WAN, and managed Wi-Fi; and wholesale customers, which buy both voice and data services to supplement their own network infrastructure.