In 2025, Commonwealth Bank of Australia completed one of the most ambitious technology transformations in global banking — migrating its most mission-critical system, SAP Banking off mainframe and onto S4 on AWS.

This session takes you inside the 18-month engineering journey that modernised the beating heart of Australia's financial system — safely, at scale, and without customer disruption. It explores how CBA upgraded to SAP's next-generation Transactional Banking for S/4HANA (TRBK) on AWS, while re-architecting for resilience, velocity, and real-time data.

You'll learn how the team managed complexity across 50+ lines of business, navigated APRA regulatory scrutiny, and migrated a 70TB vital system of record in the small hours of a Sunday morning. Beyond the technical challenge, this is a story of culture and collaboration — how hundreds of engineers and five global partners came together to re-imagine what's possible in modern banking.

Key Takeaways:

• Engineering Transformation at Scale: Discover how one of Australia’s largest enterprises re-platformed a mission-critical system onto S/4HANA on AWS — safely, at scale, and without disruption.
• Architecting for Resilience and Agility: Learn the design principles and delivery practices that enabled real-time performance, compliance, and continuous innovation in the cloud.
• Culture as a Catalyst: See how collaboration across hundreds of engineers and multiple global partners turned an audacious technical goal into a model for modern transformation.