Monitoring improves development effectiveness and efficiency by reviewing performance and using evidence to adjust programming for optimal results. Good monitoring starts with good planning and clear identification of what a programme or project will strive to achieve with specified resources. It is a continuous management function that provides decision-makers with regular feedback. Evidence from monitoring also serves as a critical input to evaluation and enables evidence-based reporting. Monitoring includes: (a) tracking performance through the collection of appropriate and credible data and other evidence; (b) analysing evidence to inform management decision-making, improve effectiveness and efficiency, and adjust programming as necessary; and (c) reporting on performance and lessons to facilitate learning and support accountability.