Summary17.1 Introduction17.2 Basic Principles of Developing New Fermentation Processes17.3 Techno-economic Analysis: the Link Between Science, Engineering, and Economy17.4 From Fermentation Process Development to the Market17.5 The Industrial Angle and Opportunities in the Chemical Industry17.6 Evaluation of Business Opportunities17.7 Concluding Remarks and OutlookAcknowledgmentReferences