This report evaluates cloud computing technologies for the Department of Spatial Information (DSI) to migrate its Online Spatial Delivery System (OSDS). It examines the advantages and disadvantages of Infrastructure as a Service (IaaS) and Platform as a Service (PaaS) for OSDS deployment, considering factors like scalability, security, and location independence. The report also explores different cloud deployment architectures, recommending a private cloud model for enhanced security and flexibility. Furthermore, it assesses cloud edge solutions and compares monolithic and microservice architectures, advocating for a microservice approach for OSDS due to its scalability, ability to handle updates, and potential to prevent cascading failures. The report concludes with a comprehensive analysis of cloud computing strategies tailored to DSI's specific needs and data sensitivity.
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