Extending SAP S/4HANA Without Breaking Clean Core: Lessons from Vistaprint
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Extending SAP S/4HANA Without Breaking Clean Core: Lessons from Vistaprint
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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.