This book first sets out a conceptual framework of three main types of product-as-a-service contracts (product-oriented, use-oriented, result-oriented PSS) based on real-life examples. Second, it identifies and analyses the relevant EU regulations as well as the national (BE, NL) contract laws applicable to these contracts. Third, it evaluates the current regulatory framework of product-as-a-service contracts in order to identify its strengths and weaknesses. Fourth, legal solutions are proposed to tackle the identified weaknesses and to promote balanced, truly sustainable product-as-a-service contracts.