Enterprise resource planning systems are the invisible backbone of global business. Understanding how SAP’s modules interconnect is like seeing the blueprint of modern commerce.

Why This Matters

Twenty years ago, understanding ERP modules was a specialist skill — something for SAP consultants and IT architects. Today, with digital transformation touching every industry, having a high-level mental model of how Finance talks to Supply Chain, or how Manufacturing connects to HR, is invaluable for any engineer working in the enterprise space.

Key insight: Every SAP module shares one database. When you post a financial document in FI, it instantly updates inventory in MM. That single-source-of-truth architecture is what makes SAP both powerful and complex.

Interactive Tips

• Hover over a cluster to highlight its modules and connection lines
• Click any module node in the SVG map, or any module pill in the sidebar, to see T-codes and integration details
• Use the filter pills at the top to isolate a specific cluster
• The center node (SAP ERP) pulses — representing the single shared database at the heart of the system