This chapter addresses two critical aspects of sustainability integration in product design and development. The first aspect considers the scope and rigor of the approach to identify criteria to guide development of solutions with high sustainability performance, i.e., the depth and detail. The second aspect is the limited implementation of existing sustainable product development approaches in industry, which wants new tools and methods to be quick and easy to use. In three use case applications the approaches to identify leading sustainability criteria are evaluated. The results are discussed to provide guidance for industry and academia in what approach to select depending on design context, as well as directions for future research.