The CPE WAN Management Protocol (CWMP) is a network management protocol used to facilitate communication between Customer Premises Equipment (CPE) and Auto Configuration Servers (ACS). It enables service providers to remotely manage and configure devices, ensuring efficient operation and maintenance of network services. CWMP is based on the TR-069 standard, which defines how devices can be automatically configured and monitored. This protocol allows for tasks such as firmware updates, diagnostics, and performance monitoring, helping to improve the overall user experience and reduce operational costs for service providers.