Develop innovations in its usage environment

July's Harvard Business Review article "Engineering Reverse Innovations" explains why you shouldn't develop innovations for Developed countries and then just expect them to be successful in D&E markets with some minor adaptations. The article (which is really good, by the way) explains five design principles to showcase how to develop a product for D&E, but I would sum it up in another very basic principle - "Develop your innovation in its usage environment". Make sure that your product is suited to the way it is meant to be used by conceptual design - if you do it that way, you maximise your chances of success. And, by the way, this is not only valid for D&E - it is valid for every single market and product.