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Question :-

In order to achieve greater scalability, a CIO has mandated that a specific set of processes and data move to a cloud environment. These assets include: - Company email requiring anti-spam protection - Proprietary database with specific infrastructure requirements - Point-of-sale application and process for retail purchases. Which service and deployment model could support all of these assets?
Infrastructure as a Service, hosted in a private cloud
Platform as a Service, hosted in a public cloud
Software as a Service, hosted in a private cloud
Software as a Service, hosted in a public cloud

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