Stacks of Paper and Systems Struggling to Keep Up
This state-owned bank has a history spanning more than 100 years and serves tens of millions of customer accounts nationwide. Its mission has always been to provide accessible, socially driven banking services. But as private banks invested heavily in digital banking, customers began to expect the same speed and convenience.
The most visible issue was paper-based operations. From account opening and loan applications to complaint handling, everything relied on paper documents and sequential approval workflows. Customers had to wait, and staff had to chase signatures.
Its technology systems were also beginning to show their age. Parts of the core banking platform and supporting applications had been developed many years ago. Adding new features was slow and expensive, and maintenance depended on highly specialized expertise that was increasingly difficult to find in the market.
Capacity was another challenge. The bank’s existing on-premise environment lacked flexibility. At month-end or during special promotions, user traffic would spike sharply. Scaling the system meant waiting for hardware procurement and installation, a process that could take months.
Starting from the Inside Before Reaching the Customer
Enersys designed the digital transformation program in three integrated parts.
The first was a new application layer built specifically for the bank. It used a flexible, scalable microservices architecture and covered key processes, including an electronic document management system that fully digitized paper records, an omnichannel customer service platform that unified all channels in one place, and an automated back-office system for employees.
Development followed an Agile methodology, with work divided into short sprints to deliver features quickly and continuously improve them based on feedback.
The second was cloud migration. Enersys planned the transition in phases, starting with a cloud readiness assessment to determine which systems should be rehosted, refactored, or rebuilt. Lower-risk systems were migrated first, followed by mission-critical systems in sequence. The target architecture was designed as a hybrid cloud: some workloads ran on the public cloud for flexibility, while others remained on a private cloud to comply with Bank of Thailand requirements.
The third was process automation. RPA and business process automation were introduced to improve internal operations, including loan workflows, complaint management, and report generation for regulatory agencies.
From Several Days to Just a Few Hours
The transformation delivered measurable improvements in how the bank operates:
- Processes that once took several days could now be completed within just a few hours — reducing service time by 62%
- Paper documentation was reduced by 78% through the electronic document management system
- Auto-scaling cloud infrastructure increased support for concurrent users by approximately 4x
- Infrastructure costs fell by 37% by shifting from upfront hardware investment to pay-as-you-use consumption
- Automated verification reduced initial loan approval time by 68%
- Customer satisfaction (CSAT) increased by 18 points thanks to faster, more convenient service
This project is a strong example of digital transformation in the state banking sector, raising service standards to match those of leading private banks while preserving the bank’s mission of delivering accessible financial services to all segments of Thai society.
