Who are the golden client in sap?

In SAP terminology, "golden clients" refer to specific client environments that are designated as the primary sources of truth for configuration and customization within an SAP system landscape. These clients typically contain the most accurate and stable data configurations, serving as a benchmark for other clients, such as development or testing environments. Golden clients are crucial for ensuring consistency and reliability across various SAP instances, particularly during upgrades or migrations. They are often used for training and demonstration purposes as well.