With the trend of digital economy, cloud services and its ecosystem have developed and matured. Another fast-growing trend, data Economy and big data, changes the way how cloud services create value. This research aims to explain the evolution of cloud service development during the big data era in the design science perspective. An ecosystem model with three roles is proposed to show the big data ecosystem and the relationships with the development of cloud services. Currently, we use a cloud service case to explain the proposed model and believe that the proposed model can inspire further research on cloud and big data ecosystem.