Lumen Technologies, Inc. is a networking company, which connects people, data, and applications quickly and securely. The Company is engaged in providing an array of integrated products and services to its domestic and global business customers and its domestic mass market customers. It operates through two segments: Business segment and Mass Markets segment. The Company conducts its operations under four brands: Lumen, which is its flagship brand for serving the enterprise and wholesale markets, including its Private Connectivity Fabric (PCF) network architecture, Lumen Digital products, and its priority services including Edge, Network-as-a-Service and cybersecurity; Quantum Fiber, which provides fiber-based broadband services to residential and small business customers; CenturyLink, which is engaged in providing primarily mass-marketed copper-based communications services, and Black Lotus Labs, which is its cyberthreat research and intelligence arm.