For the software system development in cloud, it is difficult to have a complete specification of the desired system. Due to the product development time (time to market) will affect the demand and market trends systems, and in product prices, reducing system development time will enhance product value. Therefore, in this study, we have adopted a prototyping method by cloud-based system development to shorten development time. We plan to found out that such methods can be used to quickly generate the complete system, but the resulted system is still missing some important features or related files. In this paper, a UI-Driven approach was applied on the prototyping method. The methodology is illustrated with the help of a case study on Heroku cloud platform. We discussed and proposed the program design on the applied prototype which deployed edcloud system of Heroku cloud platform and in addition to shorten the development time for developers and customers in communications. The prototype can be developed through a storyboard and UI (user interface)-Driven approach to provide a more accurate and fast system development process. The case study showed that the proposed method was efficient for user to develop a software system in cloud platform.