Which cloud computing deployment model allows for a mix of on-premises…

Answer: Hybrid cloud

Definition: Hybrid cloud combines on-premises infrastructure (or a private cloud) with public cloud services so organizations can run some workloads locally and others in the cloud.

• Benefits: flexibility to place workloads where they fit best, scalability for peak demand, and potential cost optimization.

• Common use cases: obeying data residency or regulatory requirements, supporting legacy systems on-premises while using cloud services for new apps, and bursting to the public cloud for high traffic.

• Examples: keeping sensitive databases on-premises while running analytics in the public cloud; using SaaS for collaboration and on-premises servers for core transactional systems.

Why the other deployment models do not fit:

• Public cloud: services run on third-party provider infrastructure over the internet and do not include dedicated on-premises resources.

• Private cloud: resources are dedicated to a single organization (often on-premises) and do not by themselves describe mixing with public cloud services.

• Community cloud: a shared infrastructure for organizations with common requirements; it is not defined by combining on-premises and public cloud resources.

Key point: If a deployment mixes an organization’s own on-premises systems with public cloud services, it is a hybrid cloud.