“…A framework which was developed in 2007 and since then has seen constant and consistent development work is de Waal's HPO Framework (de Waal, 2006/2010. It is, to the knowledge of this author, the only HPO Framework which has been repeatedly evaluated on its workings and (positive) results in practice (see for example de Waal and Frijns, 2011;Honyenuga et al, 2014;de Waal and Mulimbika, 2017;de Waal and de Haas, 2018), and for whom causality between the framework and increased organizational performance has been shown (de Waal and Goedegebuure, 2017). We will take the literature on the application of this framework in practice as a source for identifying the success factors for an HPO transformation, and therefore, we briefly describe the development and structure of this framework in this section (taken from de Waal, 2018a).…”