The definition and construction of complex computer-based systems require not just software engineering knowledge, but also many other domain-specific techniques to ensure many system’s functional and non-functional properties. Hence, there is a trend to move away from programming languages to models on which one can reason: model-driven engineering. Yet, this remains a complex task: one need to master many techniques. In this paper, we claim that MDE is incomplete: it is “just” an implementation framework to support advanced model-based techniques, verification of systems non-functional properties, code generation, etc. There is a conceptual gap to fill to know “what” to do with models. We propose to switch from MDE to VDE: Verification-Driven Engineering, so that the user knows how to model a system to analyze it. We sum up existing techniques and their relevant application domains.