Our bank cooperated with Tianyang Technology to build a digital credit card operation platform, and the IDER credit card digital operation platform developed by Tianyang is also highly praised in the industry. The system integrates the functions of customer acquisition marketing, incoming business, credit review business, account management, intelligent collection, centralized strategy deployment and so on. The system adopts the distributed micro-service architecture and draws lessons from the business operation mode of prime bank, so as to reserve flexible and rapid expansion space for future development. The system can also cover business scenarios such as credit card acquisition marketing, incoming letter review, risk control operation after lending, and phased business management. At the same time, it provides a "one-stop" support platform for credit card business to help upgrade the banking management system; UnionPay, Tonglian system, rapid relocation, etc.