Core Banking Modernization in Asia Pacific: Regional Challenges and Opportunities

Asia Pacific (APAC) is at the epicenter of a digital banking revolution. With a population that is both digitally savvy and increasingly demanding, banks across Southeast Asia and Australasia are under immense pressure to modernize their core banking systems. The region’s unique blend of rapid digital adoption, evolving regulatory landscapes, and a strong imperative for financial inclusion creates both challenges and opportunities for banks seeking to leapfrog legacy constraints and compete with digital-first challengers.

The APAC Modernization Imperative

While banks worldwide are racing to modernize, APAC’s journey is shaped by distinct regional factors:

Regulatory Complexity: APAC banks face a patchwork of local regulations, with compliance requirements that can differ significantly between countries. Regulatory change is as much a barrier as it is a catalyst, with over a third of APAC banks citing regulation as a top challenge—on par with the disruption caused by global events.
Digital Adoption and Customer Expectations: The region’s consumers are among the world’s most digitally engaged. In Southeast Asia, three out of four people lack sufficient access to financial services, making digital channels critical for financial inclusion. Customer experience is a key organizational metric, driving a culture of customer-led innovation.
Financial Inclusion: The need to reach unbanked and underbanked populations is more pronounced in APAC than in many Western markets. Banks that can quickly develop accessible digital offerings stand to gain significant market share.
Fraud and Security: Rapid digitization has made APAC a target for fraudsters, prompting regulators to tighten controls and banks to invest in robust security and compliance frameworks.

Why Modernize Now? The Case for Coreless and Cloud-Native Banking

Legacy core systems are stifling innovation and agility. Maintaining these systems is costly and resource-intensive, diverting investment from new products and customer experiences. As digital-native competitors and fintechs enter the market with cloud-native, modular platforms, incumbent banks must act decisively to avoid obsolescence.

Cloud-Native, Composable Architectures

Migrating to cloud-based, modular core banking platforms enables banks to launch new products and services at speed, scale efficiently, and unlock the power of real-time data. Cloud is not just a storage method—it’s the engine for digital transformation, enabling agility, resilience, and innovation.

Coexistence Over “Big Bang” Migration

Rather than risky, all-at-once migrations, a coexistence strategy—running new and legacy cores in parallel—has emerged as the preferred approach. This controlled, iterative method allows for testing, learning, and risk mitigation, ensuring business continuity and regulatory compliance. Coexistence migration de-risks transformation by migrating in controlled tranches, allowing banks to adapt to regulatory and operational realities unique to each APAC market.

Customer-Centric Design

Modernization is not just about technology. It’s about reimagining operating models and customer journeys. Leveraging data and digital channels, banks can deliver personalized, seamless experiences that drive loyalty and growth—critical in a region where customer experience is a top priority.

Agile Delivery and Talent Transformation

Modernization is as much about people as it is about technology. Upskilling teams, fostering agile ways of working, and embedding a culture of continuous innovation are essential for success. Banks must invest in talent transformation to keep pace with rapid technological change and evolving customer expectations.

Publicis Sapient’s Approach: Proven Strategies for APAC Banks

Publicis Sapient has partnered with leading banks across Southeast Asia and Australasia to deliver customer-focused, future-ready banking experiences. Our approach is grounded in:

Cloud-native, composable architectures for speed and scalability
Coexistence migration strategies to minimize risk and ensure compliance
Customer-centric design to differentiate in a crowded market
Agile delivery and talent transformation to foster innovation

Accelerating Modernization with Sapient Slingshot

At the heart of our modernization strategy is Sapient Slingshot, our proprietary AI-powered platform. Slingshot automates and accelerates complex software processes, from prototyping and code generation to testing and deployment. By embedding industry and technical expertise, Slingshot modernizes outdated code, streamlines new development, and delivers up to 99% code-to-spec accuracy. This means faster time to market, higher quality, and the freedom for your teams to focus on innovation.

Regional Case Studies: Transformation at Speed and Scale

Siam Commercial Bank (SCB): Reinventing Banking in Southeast Asia

Facing intense competition from digital challengers and tech giants, SCB partnered with Publicis Sapient to reinvent its business model and technical foundation. The result? A new platform that enables rapid product launches and innovative customer engagement—such as integrating food delivery into the banking experience. This transformation was delivered in just 12 weeks, demonstrating that with the right strategy and partners, even large incumbents can move at startup speed.

Lessons from Australasia: Innovation at Scale

Australian banks are navigating a landscape of heightened competition, regulatory reform, and shifting customer expectations. The most successful banks are those that:

Migrate core infrastructure to the cloud, enabling agility and unlocking data-driven insights
Build modular, API-driven platforms for rapid product development and ecosystem integration
Simplify and automate operations, focusing on end-to-end digital processing for high-value areas like onboarding and credit origination
Scale new offerings quickly, leveraging digital challengers as testbeds for innovation
Manage the coexistence of legacy and modern systems, using agile, customer-centric approaches to migration

Actionable Strategies for APAC Banks

Adopt a Coexistence Migration Strategy: De-risk transformation by running new and legacy cores in parallel, migrating in controlled tranches.
Invest in Cloud and Data Platforms: Unlock agility, resilience, and real-time insights by moving to cloud-native, composable architectures.
Prioritize Customer Experience: Use data to personalize journeys, drive engagement, and differentiate in a crowded market.
Strengthen Regulatory and Security Posture: Build compliance and security into the core, leveraging automation and AI to stay ahead of evolving threats.
Foster a Culture of Agility and Innovation: Upskill teams, embrace agile delivery, and empower cross-functional collaboration.

The Road Ahead: Leapfrogging Legacy Constraints

Banks in APAC have a unique opportunity to leapfrog legacy constraints and set new standards for digital banking. By embracing cloud-native platforms, customer-centric design, and agile ways of working, they can deliver the experiences today’s customers demand—while reaching new markets and driving sustainable growth.

Publicis Sapient stands ready to help banks across Asia Pacific navigate this journey, drawing on deep regional expertise and a proven track record of delivering transformation at speed and scale. The future of banking in APAC is digital, inclusive, and customer-first. The time to modernize is now.