Lumen Technologies, Inc. is an American telecommunications company headquartered in Monroe, Louisiana, which offers communications, network services, security, cloud solutions, voice and managed services through its fiber optic and copper networks, as well as its data centers and cloud computing services. Its has been on the S&P 600 index since being removed from the S&P 500 in March 2023. Its communications services have included local and long-distance voice, broadband, Multi-Protocol Label Switching, private line, Ethernet, hosting, data integration, video, network, public access, Voice over Internet Protocol, information technology, and other ancillary services. Lumen has gone through many acquisitions, divestments, and structural changes. In the 20th century, this primarily consisted of buying and selling local telecom providers. Larger mergers at the beginning of the 21st century added internet service providing to Lumen's core business. As Cloud computing became more important, Lumen acquired business to serve enterprise cloud customers. Wikipedia