Cloud computing adoption is an increasingly important trend in information and communication technologies, offering the potential to improve the reliability and scalability of IT systems. Diffusion of cloud computing can potentially change the way business information systems are developed, scaled up, maintained and paid for. This not only applies to large organisations, but also increasingly to small and medium-sized businesses. In this developmental paper, we study cloud computer adoption by applying the Technological, Organisational and Environmental (TOE) model. Data was gathered from 104 organisations in Greece using an online survey. Based on our preliminary analysis, among the factors examined, only relative advantage was found to have significant influence on adoption decisions so far. We are currently continuing our data collection process, which will enable us to undertake more robust analysis. One of the areas of potential interest is the effect of the financial crisis among those who intend to adopt cloud computing.