CSG Systems International, Inc. is a provider of customer engagement, revenue management, and payments solutions. The Company offers integrated real-time revenue management platforms leveraging public cloud, private cloud, or on-premises deployments to optimize and monetize transactions at every stage of the customer lifecycle. It provides brands with strategic insights, experience design, customer journey management, business intelligence analytics, and customer communication solutions. It offers an end-to-end software as a service (SaaS) payments platform, allowing organizations to accept electronic check/ automated clearing house (ACH), debit and credit card payments, and offer the ability to receive funds. In addition, the Company offers operational services encompassing infrastructure management, including hardware, application, and environmental management and application configuration management, including configuration development, release, and deployment.