Start with decisions, not modules
Document the decisions the new system must support, the owners of those decisions and the evidence they need.
Map the current state honestly
Capture handoffs, spreadsheets, exceptions, approvals and data gaps before designing the future state.
Control customization
Use standard configuration where it fits. Custom development should protect a meaningful differentiator or an essential control.
Define acceptance
Each requirement needs a testable outcome, responsible owner and clear path into user acceptance testing.
Practical next step
Validate the decision against your own processes, data, controls and operating model before committing to implementation.