AT&T builds and operates telecommunications networks, providing high-speed wireless, fiber internet, and integrated communication solutions. The company has been in operation for nearly 140 years, having been founded in 1885. Today, it employs over 200,000 people and serves customers primarily in the United States.
Its core technical work spans several domains relevant to computer science, including 5G networks, fiber internet infrastructure, cybersecurity, AI-driven security, and cloud-based solutions. These technologies underpin a product portfolio that ranges from high-speed wireless and fiber internet to enterprise communication systems.
The company's history began with the long-distance telephone network, the first to transmit speech over electrical wires over long distances. Its current scale and scope place it among the largest telecommunications providers in the country, operating across the telecommunications, network technology, cybersecurity, and digital services sectors.
