The various types of cloud computing are also known as deployment models.
Public clouds are environments that the end user doesn’t own. Examples of public clouds include AWS, Google Cloud, Microsoft Azure, IBM Cloud, and Alibaba cloud.
With public clouds, environments are partitioned and distributed across multiple organizations. All organizations share the public cloud infrastructure. Due to the space available, scalability is much easier.
Many public clouds have associated fees, often under a pay-per-use model, which makes them appropriate for smaller businesses. The cloud provider is responsible for upkeeping the instances.
- Highly scalable
- No geographical restrictions
- Cloud providers upkeep services
- Cost-efffective (pay-as-you-go)
- Efficient remote colaboration
- Reliable source
- Restricted customization
- Decreased autonomy over servers
- Potentially less secure
- Limited transfer capabilities to other providers
- Not ideal for sensitive projects
Private clouds consist of cloud environments that are dedicated to a single organization. The environment runs behind the organization’s firewall. By isolating the resources and IT infrastructure, a cloud becomes a private cloud.
You can now rent private clouds through vendor-owned data centers off-premises, nullifying many geographical restrictions. With this change, private clouds can be deployed, configured, and managed by a third-party vendor. There are also dedicated private clouds, which consist of a cloud within another private or public cloud.
Although they are often more expensive, private clouds are especially well-suited for large organizations that require strict regulation. They focus on security, customizability, and computing power.
- Higher security
- More server autonomy
- No sudden changes to disrupt operations
- IT personnel expertise to maintain
- Comparatively more expensive