With rapid business growth, peer competition and diversified development, urban commercial banks put forward more stringent requirements for IT infrastructure and business continuity, thus reconstructing and transforming the application architecture and IT infrastructure, and then adopting the idea of building an active-active data center in IT architecture. Different from the four largest banks and joint stock bank’s core networks and multi-active financial data centers in terms of scale, active-active data centers for urban commercial banks support all business systems. In addition, it is required to plan and design full-stack IT with high availability and active-active conception for infrastructure and application architecture.