Indonesia’s banking infrastructure is being reshaped by rising digital transaction volumes, real-time payment connectivity and demand for financial services that can operate across a large, mobile-first population. Bank Indonesia reported 16.07 billion digital payment transactions in 2026, up 36.88% year-on-year, while QRIS transactions grew 100.12% in the second quarter. Furthermore, BI-FAST processed 1.36 billion transactions.
These numbers are increasing pressure on banks to modernize their underlying infrastructure. For cloud banking in Indonesia, the challenge is no longer simply moving workloads to the cloud. Banks must build architectures that combine scalability, security, regulatory control and continuous service availability.
Indonesia’s Banking Infrastructure Is Entering a New Phase
Indonesia’s banking infrastructure is shifting towards intelligent banking and cloud-native modernization, driven by real-time payments and ecosystem-based financial services. The growth of digital banking in Indonesia is also increasing demand for infrastructure capable of supporting high transaction volumes and rapid product deployment.
Key Drivers of the New Phase
- Cross-Border QRIS: QRIS Cross-Border now connects Indonesia with Thailand, Malaysia, Singapore and Japan, supporting real-time payments for consumers and merchants.
- Digital Bank Growth: Bank Jago reported assets of Rp41.4 trillion by June 2026, maintaining a stable capital adequacy ratio to support future business expansion, standing at 28.4%
- Cloud and AI Adoption: Banks are increasingly assessing cloud-native infrastructure, AI and API-based architectures as part of broader technology modernization.
Designing a Hybrid and Multi-Cloud Banking Architecture
For Indonesian banks, cloud adoption must balance infrastructure flexibility with regulatory and data-management requirements. OJK’s 2026 regulation on information technology for commercial banks covers IT governance, risk management, service providers, electronic-system placement outside Indonesia, data protection and internal controls.
Core Architectural Layers
- Private Core: Core banking systems, sensitive customer information and critical records can remain within controlled private environments.
- Public Cloud Tier: Elastic workloads such as analytics, customer applications, AI services and selected digital channels can use public cloud capacity.
- Integration and API Layer: API gateways, security controls and load balancing connect digital services with core systems while controlling access and traffic.
Key Compliance and Operational Strategies
- Workload-First Placement: Keep highly sensitive or latency-critical workloads in controlled environments while moving elastic workloads to suitable cloud infrastructure.
- Data Governance: Establish clear controls for data location, access, retention, encryption and processing.
- Vendor Lock-In Management: Containers, standardized APIs and portable application architectures can give banks greater flexibility across infrastructure providers.
Scaling Banking Services Without Scaling Physical Infrastructure
Cloud-native infrastructure allows banks to expand computing capacity without continuously adding physical servers. This is particularly important as QRIS, BI-FAST and mobile financial services generate increasingly high transaction volumes.
Core Pillars of Infrastructure-Free Scaling
- Cloud-Native and Microservices Architecture: Modular services can be scaled independently, allowing banks to respond to demand without redesigning entire applications.
- National Payment Rails: QRIS provides an interoperable QR payment standard, while BI-FAST supports real-time retail transactions.
- Embedded Finance and BaaS: APIs allow financial products to be integrated into wider digital ecosystems, extending distribution without relying exclusively on physical branches.
- Digital Onboarding and AI Risk Scoring: Digital identity verification, transaction data and alternative information can support remote onboarding and more data-driven credit assessment.
This infrastructure model is creating demand for banking solution institutions that can scale according to transaction volumes, customer activity and product requirements.
Security, Data Governance and Regulatory Readiness
Cloud transformation introduces additional responsibilities around cybersecurity, third-party providers, data access and operational continuity. OJK’s current IT regulation specifically addresses technology governance, risk management, information security, external service providers, data protection and audit controls.
Banks therefore need security controls built into architecture rather than added after deployment. Identity and access management, encryption, continuous monitoring, vulnerability management, backup strategies and incident-response procedures should cover both cloud and on-premises environments.
Data governance is equally important. Banks need defined ownership for customer and transaction data, controls over privileged access, documented processing activities and mechanisms for detecting unauthorized movement. A hybrid model also requires consistent security policies across different environments
What Banks Need From Their Cloud Transformation Roadmap
A practical roadmap should connect infrastructure modernization with business objectives, regulatory obligations and measurable operational outcomes.
Key Requirements for Indonesian Banks
- Data Sovereignty & Local Storage: Sensitive information must be managed according to applicable Indonesian requirements and the bank’s regulatory obligations.
- Regulatory Compliance & Risk Management: Technology strategies should include third-party governance, cybersecurity controls, operational resilience and tested incident-response plans.
- Composable Modernization: Banks can modernize incrementally by connecting newer cloud applications with existing core systems instead of replacing every legacy platform simultaneously.
- Open API Integration: Standardized APIs can support connections with fintechs, payment networks and ecosystem partners.
- Cost & Scale Optimization: Cloud consumption models allow infrastructure capacity to align more closely with actual demand, although banks still need strong cost governance.
The result is a more structured path towards scalable banking infrastructure rather than cloud adoption for its own sake.
Take the Infrastructure Debate to Indonesia’s Banking Leaders at WFIS 2026 – Indonesia
Cloud architecture, cybersecurity, AI, payments, and regulatory technology are becoming board-level priorities for Indonesia’s financial sector. As banks look to modernize their infrastructure while meeting growing demands for security, scalability and regulatory compliance, the focus is shifting towards practical, resilient and connected technology strategies.
The World Financial Innovation Series (WFIS) in Indonesia, taking place on 27–28 October 2026 at Raffles Jakarta, brings together banking leaders, technology experts, government officials and policymakers to discuss the infrastructure shaping the future of financial services.
Delegates, sponsors, C-suite executives and industry leaders can use the platform to exchange essential perspectives, explore emerging technologies and understand how Indonesia’s banking infrastructure is evolving to support the next phase of digital finance.
Frequently Asked Questions (FAQs)
1. Why are Indonesian banks adopting cloud infrastructure?
Cloud infrastructure helps banks scale computing resources according to demand while supporting digital applications, analytics, APIs and high-volume payment services without continuously expanding physical infrastructure.
2. What is hybrid cloud banking?
Hybrid cloud banking combines private or on-premises infrastructure with public cloud services, allowing banks to place workloads according to security, performance, regulatory and scalability requirements.
3. How does cloud banking support financial inclusion?
Cloud platforms can reduce infrastructure constraints and help financial institutions expand digital onboarding, payment services, lending applications and other financial products to underserved customer segments.
4. What role does regulation play in cloud banking?
Regulation influences how banks manage technology risks, data protection, third-party providers, cybersecurity, system placement, governance and operational controls throughout the cloud transformation process.
5. Why is a banking technology conference relevant to cloud transformation?
A banking technology conference provides opportunities for banking leaders, regulators and technology providers to discuss architecture, cybersecurity, payments, AI, compliance and infrastructure priorities affecting financial institutions.