Book excerpt: In Performance Requirement Prohibitions in International Investment Law, Alexandre Genest explores the prohibition of performance requirements in investment treaties. The author focuses on answering two questions: first, how do States prohibit performance requirements in investment treaties? And second, how should such prohibitions of performance requirements be interpreted and applied? In providing answers to these questions, Alexandre Genest breaks new ground by proposing the first empirical typology of performance requirement prohibitions in investment treaties and the first in-depth analysis of arbitral awards on the subject. Alexandre Genest formulates insightful remarks for a more deliberate and informed interpretation and application of existing performance requirement prohibitions. These remarks will help improve the drafting of performance requirement prohibitions in future investment treaties.