Software as a Service (SaaS) - Offers ready-to-use software applications hosted on the cloud, eliminating the need for managing underlying infrastructure.

Platform as a Service (PaaS) - Provides a cloud-based platform allowing customers to develop, run, and manage applications without the complexity of building and maintaining the infrastructure.

Infrastructure as a Service (IaaS) - Delivers virtualized computing resources over the internet, offering full control over the hardware and operating systems, suitable for custom and high-performance computing needs.

None of the above - The corporation's requirements cannot be met by any existing cloud service models.