Public, Private, and Hybrid clouds all these are basically a deployment models of cloud computing. Cloud computing is the delivery of computing services over the internet or you can say on cloud. The computing services includes servers, databases, storage, networking, software, analytics, and intelligence, and you pay only for what you use.
Lets see the difference between these clouds deployment models:
Public Cloud:
Public clouds are the most common type of cloud computing deployment, in public clouds, all the cloud resources such as hardware, software, and other supporting infrastructure is owned and operated by the cloud service provider, and you can access these services and manage your account using a web browser.
Advantages of public clouds:
Following are some advantage of using public clouds:
- No need to buy hardware or software, and you just need to pay only for what service you use. No capital expenditure (CapEx) costs involve.
- No need to worry about maintenance, your cloud service provider provides the maintenance.
- On-demand resources are available to meet your business requirements.
- No technical knowledge required.
- High Availability- provides business continuity of IT services through redundant, fault-tolerant, or failover-protected components.
- Agility – any resources can be deployed and configured quickly on requirement change.
Disadvantages of public clouds:
There are some disadvantages of using public clouds:
- There may be specific security requirements that cannot be met by using public cloud.
- There may be some government policies, industry standards, or legal requirements which public clouds cannot meet.
- No ownership over the physical infrastructure as all are managed by cloud service provider, so you cannot manage them as you may want to.
Private Cloud:
A private cloud consists of cloud computing resources which is exclusively used by one business or organization. In Private clouds the clouds resources such as the services and infrastructure are always managed by you on a private network and the hardware and software are dedicated only to your organization.
You can create a cloud environment in your own datacenter and provide self-service access to cloud resources to users in your organization, and you are also completely responsible for the purchase and maintenance of the hardware and software services that you provide.
Advantages of private clouds:
Following are some advantage of using private clouds:
- You can ensure the configuration can support any scenario, business needs or legacy application.
- You have ownership over security, privacy and infrastructure.
- Private clouds can meet strict security, compliance policy, or legal requirements.
- In private cloud can make it easier for an organization to customize its resources to meet specific requirement.
Disadvantages of private clouds:
Following are some disadvantages of using private clouds:
- Initial capital expenditure(CapEx) costs involved, and must purchase the hardware for startup and maintenance.
- Owning the equipment limits the agility such as to scale you must buy, install, and setup new hardware.
- Require technical knowledge and expertise.
Hybrid Cloud:
A hybrid cloud is a type of cloud computing which combines both Public and Private cloud and allows data and applications to be shared between them.
Hybrid cloud gives your business greater flexibility, more deployment options, and helps optimize your existing infrastructure, security, and compliance.
Many organizations choose a hybrid cloud approach due to business imperatives such as meeting regulatory and data sovereignty requirements, taking full advantage of on-premises technology investment, or addressing low latency issues.
Advantages of Hybrid clouds:
Following are some advantages of using hybrid clouds:
- You can take advantage of public cloud benefits when you need them.
- Organization can maintain a private infrastructure for sensitive assets or workloads that require low latency.
- It has the ability to scale to the public cloud, so you pay for extra computing power only when needed.
Disadvantages of Hybrid clouds:
Following are some disadvantages of using Hybrid clouds:
- It can be more expensive
- Complicated to manage due to larger landscape
- Most dependent on IT knowledge and expertise.
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