A cloud architect is designing a system for sensitive government data. The primary requirement is absolute physical and logical separation of infrastructure from any other customer, with dedicated hardware and network resources, even if it means higher costs. Which cloud model best satisfies this stringent isolation requirement?
- ADedicated Cloud (Single-Tenant Public Cloud)
- BPrivate Cloud
- CPublic Cloud
- DHybrid Cloud
Show answer & explanationAnswer & explanation
Correct answer: A. Dedicated Cloud (Single-Tenant Public Cloud)
While a private cloud offers dedicated resources, a 'Dedicated Cloud' or 'Single-Tenant Public Cloud' specifically refers to a public cloud provider offering hardware and network infrastructure that is physically separate and dedicated to a single customer, distinct from their standard multi-tenant public cloud offerings. This provides the highest level of isolation and control from a public provider, meeting the 'absolute physical and logical separation' requirement. A private cloud could be on-prem, but the question implies leveraging a provider.
Why the other options are wrong
- B. Private cloud is dedicated, but 'Dedicated Cloud' (single-tenant public) specifically implies a provider offering this level of isolation within their public cloud infrastructure.
- C. Public cloud is typically multi-tenant and does not provide absolute physical isolation.
- D. Hybrid cloud combines public and private, and the public portion would lack absolute separation.
Dedicated Cloud (Single-Tenant Public Cloud)
A variation of public cloud where a provider offers infrastructure (servers, network) that is physically dedicated to a single customer, ensuring absolute isolation from other tenants.
- Physically separate hardware for one customer.
- Offers enhanced security and compliance compared to multi-tenant public cloud.
- Managed by a public cloud provider, but resources are not shared.
Memory trick: Public is shared, Private is yours, Dedicated is yours at the provider's.