BPI projects tend to be performed from the bottom up while BPR projects tend to involve top-down change mandates.

BPI (Business Process Improvement) projects often involve incremental changes and are typically initiated at the operational level, hence the bottom-up approach. In contrast, BPR (Business Process Reengineering) projects aim for radical redesign and transformation of business processes, usually driven by top management, thus involving top-down change mandates.