The Independent Evaluation Office (IEO) of the New Development Bank (NDB) is delighted to present this first edition of the Evaluation Manual. The Manual represents a significant milestone in our commitment to helping foster accountability, promote learning and drive the continuous improvement of NDB activities. Developed in alignment with the principles set out in the NDB Evaluation Policy and Evaluation Strategy, the Manual was shaped through a broad-based consultative process. It incorporates valuable feedback and insights from IEO staff, the NDB Inter-Departmental Working Group on Evaluation (IWGE), the High-Level Evaluation Advisory Committee (HLEAC), the NDB Board of Directors, and key stakeholders from NDB member countries.