What does it take to move a mainframe-based SAP core banking platform that touches around 40% of all money movements in the Australian economy onto a cloud‑enabled S/4HANA foundation, while the bank stays live? In this episode, Simon Davies, General Manager Core Banking at Commonwealth Bank of Australia, shares how his team replatformed CBA’s mission‑critical SAP core in 18 months across 50+ lines of business, balancing 2027 end‑of‑service risk with the opportunity to modernise resilience, scalability and data flows for 17 million customers. He explains how they framed the stakes for non‑technical executives, built “Everest‑level” engineering discipline, and used cloud and SAP capabilities to turn a rock‑solid core into a more flexible “bionic heart” for future customer experiences.

How do you run a 24x7, high‑volume e‑commerce business and still deliver a brownfield move to SAP S/4HANA, three upgrades, and continuous innovation without trashing clean core? In this episode, Sriram Rekapalli, Principal SAP Financials and Analytics at Vistaprint, shares how his team cut an ECC to S/4HANA conversion downtime to 18 hours during COVID, then built a three‑tier extensibility strategy that favours standard first, on‑stack Fiori adaptations for tightly coupled finance processes, and BTP only where it really fits. He explains why IT must understand the business, why finance needs to be more tech‑savvy, and how to use guardrails, business champions, and MVP-style iterations to keep customisation debt under control while still delivering the differentiating features the business demands.

Moving to cloud ERP does not mean you have outsourced security. In this episode, Gaurav Singh, Senior Manager SAP Security at Under Armour and co‑author of the bestseller “Cybersecurity for SAP,” explains why infrastructure and cloud security, shared responsibility and SAP Integration Suite should be top of mind for every SAP customer. He shares what he learned writing a 400‑plus‑page book on SAP security, why SAP Integration Suite is effectively “the heart” of your S/4HANA and BTP landscape, and how to put governance in place early so APIs, service keys and non‑human identities do not become the weakest link.