This report provides a comprehensive analysis of cloud computing for smart applications, focusing on the comparison of major cloud service providers including Amazon Web Services (AWS), Microsoft Azure, and IBM cloud. The report delves into the services offered by each provider, particularly in the context of IoT, AI, and hardware resources, while also comparing PaaS and IaaS services. A significant portion of the report is dedicated to a step-by-step process of deploying a 'Hello World' application in the cloud, detailing the stages involved. The analysis also examines the ease of managing applications on these platforms. Finally, the report offers recommendations based on the comparative analysis and concludes with a summary of the key findings. The report is designed to provide a clear understanding of the capabilities and differences between the leading cloud providers and their suitability for smart applications.