This paper presents a Manufacturing Execution System (e-Factory) developed to integrate manufacturing engineering, procurement, production planning, manufacturing and quality functions. e-Factory System supports the production preparation process. The main input of this process is data related with the three dimensions of Production. "Product Data", "Project Parameters" and "Plant Data". The outputs of the production preparation (c) 2012 The Authors. Published by Elsevier B.V. Selection and/or peer-review under responsibility of Professor D. Mourtzis and Professor G. Chryssolouris.