Define cloud computing deployment models: public, private, and hybrid. Give a scenario for each.

Define cloud computing deployment models: public, private, and hybrid. Give a scenario for each.

• A. Public cloud is shared infrastructure; private cloud is dedicated; hybrid combines both. Scenarios: public for non-sensitive apps; private for confidential data; hybrid for regulated workloads
• B. Public is for private data; private cloud is for large enterprises; hybrid outdated
• C. Public cloud requires on-prem hardware; private cloud uses only open-source software; hybrid uses air-gapped networks
• D. Public cloud never scales; private cloud always scales; hybrid is static

Answer: (A)

Cloud deployment models describe who operates the infrastructure and where the resources live. In a public cloud, the infrastructure is owned by a cloud provider and shared among many customers, with services delivered over the internet. In a private cloud, the infrastructure is dedicated to a single organization, offering greater control and often stronger security and compliance, and it can be located on‑premises or hosted privately. A hybrid cloud combines both approaches, allowing workloads to run across public and private environments and to move between them as needed.

For public cloud, a typical scenario is hosting a website or mobile app with variable traffic because it can scale quickly and cost is primarily pay‑as‑you‑go. For private cloud, a common scenario is handling confidential data or regulated workloads where you need tighter control over security and compliance. A hybrid setup is ideal for workloads that mix sensitivity with demand for scalability, such as processing with private storage for sensitive data but using public cloud resources for non‑sensitive analytics or burst capacity.

This explanation aligns with the best answer because it correctly defines shared versus dedicated infrastructure and shows how each model is suited to real‑world needs: public cloud for broader, non-sensitive use; private cloud for sensitive data and governance; and hybrid for regulated workloads that benefit from both environments. The alternatives misstate the concepts—public cloud isn’t designed primarily for private data; private cloud isn’t limited to large enterprises, and hybrid isn’t obsolete; and some choices incorrectly describe where hardware and data reside.