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Utilizing cloud computing platform to meet the new business requirements brought several business and technical benefits including cost-saving, high scalability, and business risk reductions. The new requirements of sensor-based systems for computing and communication also need cloud platforms. Based on the survey results of Korean companies, we analyze important factors of decision making for cloud platform adoption. Survey results show the cost efficiency is the most important factor for cloud platform adoption. With the economic benefits of cloud computing utilization, we provide basic arguments on data sharing issue with infrastructure providers, which requires additional investments to implement data management policies in cloud computing environment.