At present, every industry is strengthening the use of external data, but there are many problems in aspect of the external data management, such as the complexity and diversity of external data, the huge differences between formats, the difficulties in unified analysis, the large workload of interface development, and the poor stability of external interface etc. Sigma Data Bridge specializes in connecting to, managing, and monitoring external data in multiple formats. It provides quick access to different data supply channels, and can uniformly manage suppliers, monitor data transactions and track billing statistics. Through Sigma, financial institutions can perform centralized management of external data interfaces, improve data utilization efficiency, rapidly achieve external data access conversion through configuration, distribution request and master-slave switching, improve efficiency, enhance service reliability , and reduce overall data cost.