AT&T Inc. (T)

Within the communications services sector, AT&T Inc. provides mobile connectivity, fiber broadband, and enterprise networking that link households, businesses, and public institutions. The company manages nationwide wireless networks, consumer internet access, and solutions for large organizations spanning secure data transport, edge connectivity, and managed services. A mix of retail channels, digital self-service, and wholesale agreements extends its reach, while partnerships and roaming arrangements broaden international coverage for travelers and global firms. AT&T also offers collaboration, security, and internet-of-things capabilities that integrate devices and applications across industries. With operations concentrated in the United States and relationships that touch vendors, device makers, and content distributors, the company helps sustain the broader connectivity ecosystem that underpins the modern digital economy.