Book excerpt: To assist agencies in understanding and devising effective IT measurement implementation approaches, public and private org. well-known for their IT performance, leadership and mgmt. expertise were examined. Chapters: the demand for performance mgmt.; fundamental practices: the foundation of IT performance mgmt.; follow an IT "results chain"; follow a "balanced scorecard" approach; target measures, results, and accountability at decision-making tiers; build a comprehensive measurement, data collection, and analysis capability; strengthen IT processes to improve mission performance; key lessons learned for effective implementation.