CSG Systems International, Inc., together with its subsidiaries, provides revenue management and digital monetization, customer experience, and payment solutions primarily to the communications industry in the Americas, Europe, the Middle East, Africa, and the Asia Pacific. It offers Advanced Convergent Platform, a private SaaS platform; and related solutions, including service technician management, analytics, electronic bill presentment, etc. The company also provides a public SaaS-based revenue management and payments platform. In addition, it offers managed services; and professional services to implement, configure, and maintain its solutions, as well as licenses various solutions, such as mediation, partner management, rating, and charging. Further, the company provides operational services, including infrastructure management comprised of hardware, application, and environmental management; application configuration management, such as configuration development, release, and deployment; and business operations management, which includes event processing, revenue management, and settlement. It serves retail, financial services, healthcare, insurance, and government entities. The company was incorporated in 1994 and is headquartered in Englewood, Colorado.