The overall objective of the "Programme in the Field of Technical Barriers to Trade"' (TBT Programme) was to contribute to improved competitiveness in local, regional and export markets by enhancing export capacity of economic operators in ACP countries. The specific objective, moreover, was to strengthen the capacity of ACP countries and regions to influence and comply with Technical Barriers to Trade (TBT) on external markets, as well as to define and enforce legitimate and adequately harmonised TBT on internal markets while drawing maximum advantage of the existing WTO TBT agreements. To reach its objective, this programme operates on two levels; the Quality & Regulatory Infrastructure (Q&RI) level, and the compliance issues of productive industries level. The programme had a total budget of €15 million and was implemented from 2013 to 2017 through a Project Management Unit (PMU) based in Brussels. The specific objective of the assignment implemented by AETS was to provide stakeholders with evidence and analytical elements about the performance, good practices and lessons learned of the TBT Programme, which will be part of a continuous knowledge building effort to enhance the effectiveness of the Commission's trade assistance programmes. The evaluation gave special attention to following matters: - The impact of the programme in terms of achievement of tangible results; - Build on good practices and lessons learned from a parallel knowledge management initiative to make recommendations for regional initiatives in the field of TBT; - Added value of ACP level intervention to the EU supported regional and national level projects - Comparison of TBT project with other intervention modalities The assignment referred to the five evaluation criteria endorsed by the OECD-DAC (relevance, effectiveness, efficiency, sustainability and impact).and was instrumental to draw conclusions for future programming of the EU and ACP Secretariat in the area of trade-related assistance. Field missions were carried out in Brussels, Geneva and selected ACP countries and regions and final presentations were held in Brussels in June 2017 during the TBT Programme final Steering Committe meeting and at an InfoPoint session organised by DEVCO.