An internal cloud application at an organization requires additional storage space. What cloud deployment and service models did the engineers use?

In the scenario described, the organization's internal cloud application necessitates more storage space, indicating the need for both the appropriate cloud deployment and service models. The correct answer reflects a deployment model combined with a service model that would facilitate scalable storage solutions.

The deployment model is likely a private cloud, well-suited for organizations that require control over their resources, security, and computing infrastructure. This model allows the organization to manage their internal cloud application securely within their network while providing the ability to scale resources according to the application's demands.

The service model needed here is Infrastructure as a Service (IaaS). This model offers storage and compute resources over the internet, giving engineers the flexibility to increase the storage capacity on demand. IaaS provides the necessary infrastructure that allows for on-the-fly adjustments to physical resources, such as storage, while remaining cost-effective for the organization.

Thus, the combination of a private cloud deployment model and IaaS service model effectively addresses the requirements of expanding storage space for the internal application, ensuring it can handle increased data needs efficiently while maintaining necessary controls and security.