In April 2023, as WHO celebrated its 75th anniversary and embarked on the preparations for the 14th General Programme of Work (GPW14), it became imperative to engage in a thoughtful reflection on the achievements and insights gained from past endeavours. The evaluation of GPW13, the 13th General Programme of Work, plays a pivotal role in this process by serving as a vital tool for assessing effectiveness. The primary objective of this evaluation is to offer a comprehensive and impartial analysis of GPW13's outcomes, accomplishments, and hurdles encountered along the way. It also provided valuable inputs to the GPW14 formulation on a real-time basis.