Cloud computing offers different deployment models to suit various business needs. The three primary models are public cloud, private cloud, and hybrid cloud. Each model has distinct characteristics, advantages, and use cases.
Public Cloud
The public cloud is the standard cloud computing model where computing resources are provided over the Internet by a third-party cloud provider.
- These resources, including computing power, storage, and networking, are shared among multiple customers (multi-tenancy).
- It offers scalability, cost-efficiency, and flexibility, as organizations only pay for what they use.
- No need for organizations to manage infrastructure, as the cloud provider handles maintenance and updates.
- Ideal for businesses looking to quickly deploy applications without investing in physical hardware.
For a deeper understanding, refer to AZ-900: Describe the consumption-based model and AZ-900: Compare cloud pricing models.
Private Cloud
A private cloud is a dedicated cloud environment exclusive to a single organization. It offers enhanced security and customization options compared to the public cloud.
- Designed for businesses with strict security, compliance, or regulatory requirements.
- Can be hosted on-premises within the company’s own data center or by a third-party provider.
- Requires IT personnel to manage and maintain infrastructure, ensuring full control over resources.
- Suitable for industries like finance, healthcare, and government where data privacy and compliance are crucial.
To understand security benefits in the cloud, see #topic 9#.
Hybrid Cloud
A hybrid cloud is a combination of public cloud and either private cloud or on-premises infrastructure. This model allows organizations to optimize their IT environment by leveraging the benefits of both models.
- Workloads and data can be shared between public and private cloud environments for improved flexibility.
- Critical applications and sensitive data can remain on private infrastructure, while less-sensitive workloads take advantage of public cloud scalability.
- IT personnel are required to manage and integrate both environments, ensuring seamless operation.
- Beneficial for organizations that need both security and scalability, such as businesses handling fluctuating workloads.
For more information on managing cloud resources and infrastructure, see #topic 18#.
Conclusion
Choosing the right cloud model depends on business requirements, security needs, and IT capabilities. Public cloud provides cost-effective scalability, private cloud offers enhanced control, and hybrid cloud delivers a balance between the two. Organizations should assess their needs to determine which deployment model aligns best with their strategy.
To learn all of the requirements of Microsoft’s AZ-900 exam, please have a look at our AZ-900 video course. To go back to the AZ-900 list of requirements, please click here.