Penny mapped ERP, procurement, and store-back-office COBOL dependencies for a phased re-platform.

Penny Markt, REWE Group's discount banner, operates around 3,500 stores across Germany, Austria, Italy, Czechia, Hungary and Romania. The international footprint sits on a layered COBOL estate covering procurement, warehouse management, pricing, and the order-handoff batches that move goods from regional distribution centres into stores. Cross-border integrations had grown organically over years, and a phased re-platform onto the modern REWE retail stack required first understanding what was actually connected to what.

COBOLpro built a source-backed dependency view across procurement, warehouse, pricing and store-handoff domains. The view spans Penny's six-country footprint and shows the country-specific exits and shared services that hold the supply chain together — including the batch jobs whose timing creates downstream dependencies in adjacent country operations.

The platform team uses the dependency view to sequence the migration: which subsystems can be retired in place, which must move first, and which cross-border integrations need parallel-run support during cutover. The map keeps the modernisation programme on track without breaking the cross-country flows that Penny relies on every operating day.