This paper addresses the problem of developing enterprise-class eBusiness solutions in a more economically viable and time-effective way, by adopting Model Driven Development (MDD). Specifically, we report on an experience of more than six years of collaboration between Acer Inc. (the 4th branded PC vendor worldwide) and Web Models, an Italian startup company spinoff of Politecnico di Milano, innovator in the market of software tools and methodologies for MDD. The results clearly demonstrate that MDD can shorten the development of complex eBusiness solutions, improve the quality and conformance to requirements, and increase the economic profitability of solutions, by lowering the total cost of ownership and extending the life span of systems.