Monitoring and evaluation are essential processes for controlling projects and programs by systematically collecting and analyzing information during implementation and assessing whether objectives are achieved, which allows managers to identify successes or issues and make timely adjustments to ensure effective and efficient realization of plans in response to needs. Both monitoring and evaluation compare actual performance to targets but monitoring is ongoing to facilitate corrective actions while evaluation periodically assesses overall impact, effectiveness, and efficiency. Proper monitoring and evaluation systems include clearly defining management structures, objectives, indicators, information needs, and responsibilities for ongoing review and assessment.