1.B) Explain the differences between public, private, and hybrid cloud deployment models. – 7 Marks
Answer:-
- Public Cloud:
- IT infrastructure (e.g., virtualized data centers) is managed by a third-party service provider.
- Accessible to consumers on a subscription basis.
- Enables quick access to compute, storage, and application services.
- Users’ data and applications are hosted in vendor-managed cloud data centers.
- Infrastructure is available to the public.
- Private Cloud:
- Operated exclusively for a single organization.
- Provides enhanced control, security, and customization.
- Infrastructure is not shared with other organizations.
- Hybrid Cloud:
- Combines two or more cloud environments (private and public).
- Used when private cloud resources are insufficient to meet quality-of-service requirements.
- Integrates public cloud resources with privately owned infrastructure.
- Popular for organizations exploring cloud computing capabilities.
Differences Between Public, Private, and Hybrid Cloud Deployment Models
| Feature | Public Cloud | Private Cloud | Hybrid Cloud |
|---|---|---|---|
| Definition | Cloud infrastructure managed by a third-party provider, accessible to the public. | Dedicated infrastructure exclusively for one organization. | Combines private and public cloud resources. |
| Ownership | Managed and owned by a cloud service provider. | Managed and owned by the organization (or outsourced). | Shared ownership between organization and public cloud provider. |
| Access | Available to any consumer on a subscription basis. | Restricted to a single organization. | Accessible to both the organization and the public, depending on configuration. |
| Cost | Pay-as-you-go pricing, cost-effective for general use. | Higher cost due to exclusive infrastructure. | Flexible costs depending on resource usage and integration. |
| Scalability | Highly scalable, resources can be quickly increased or decreased. | Limited scalability, depends on internal resources. | Scalable by leveraging public cloud resources when private infrastructure is insufficient. |
| Security | Shared infrastructure poses higher security risks. | High security, as resources are not shared. | Provides a balance between security (private cloud) and accessibility (public cloud). |
| Use Cases | Ideal for startups, small businesses, or non-sensitive workloads. | Suitable for organizations with strict security and compliance needs. | Useful for organizations needing flexibility or transitioning to the cloud. |
| Examples | Amazon Web Services (AWS), Microsoft Azure, Google Cloud. | On-premise data centers or private cloud setups. | Hybrid solutions like AWS Outposts, Microsoft Azure Stack. |