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Lumen Technologies, Inc., a facilities-based technology and communications company, provides various integrated products and services to business and residential customers in the United States and internationally. The company operates in two segments, Business and Mass Markets. It offers dark fiber, edge cloud services, internet protocol, managed security, software-defined wide area networks, secure access service edge, unified communications and collaboration, and optical wavelengths services; ethernet and VPN data networks services; and legacy services to manage cash flow, including time division multiplexing voice, private line, and other legacy services, as well as sells communication equipment, and IT solutions.