11. Conclusion

This thesis has assessed the scope for GPP under WTO law in view of the GPA’s non-discrimination requirements. It followed a multilayered approach, assessing three different regulatory levels: Part I started with general observations, embedding GPP in the broader context of the trade and environment debate. Part II then turned to the level of the WTO, discussing the role of public procurement as well as GPP and analyzing the wording of the revised GPA under consideration of interpretational approaches. Part III and Part IV focused on the level of implementation, illustrating firstly the regulatory context and design of the EU public procurement directives and secondly, analyzing the scope for GPP in Switzerland against the background of the total reform of Swiss public procurement laws.