Cloud computing is access to internet services, such as data storage, databases, networking, and software. Cloud storage lets you save files to a remote database and access them whenever you need them. The types of cloud computing include:
- Public cloud computing
- private cloud computing
- hybrid cloud computing
- Multicloud computing
Public Cloud Computing
The term “public cloud” refers to a cloud environment that is not owned by the end-user. These include Alibaba Cloud, Amazon Web Services (AWS), Google Cloud Platform (GCP), and Microsoft Azure (Microsoft Cloud Solutions).
It becomes a public cloud when a cloud is partitioned and redistributed to numerous tenants. Since some cloud providers allow tenants to use their clouds for free, fee structures are no longer necessary characteristics of public clouds.
Today’s public cloud providers are starting to offer cloud services in their customers’ on-premise data centers, departing from the traditional model of off-premises it. As a result, locational and ownership distinctions are now meaningless.
Private Cloud Computing
Private cloud computing (internal or corporate cloud) provides businesses with many benefits such as self-service, expandability, elasticity, and the additional control and customization of dedicated resources over an on-premises computing infrastructure. However, unlike public clouds set for the general public, private clouds are only for select users.
Furthermore, private clouds provide a higher level of security and privacy by utilizing corporate firewalls and internal hosting to ensure data protection from third parties. However, one disadvantage is that the company’s IT department is held accountable for the cost and management of the private cloud.
There are two models of private clouds:
- Infrastructure as a service (IaaS): allows a business to use resources like computers, networks, and storage as a service.
- Platform as a service (PaaS): complete cloud development and deployment environment, with resources to deliver everything from simple cloud-based apps to complex ones.
Hybrid Cloud Computing
A hybrid cloud, also known as a cloud hybrid, combines an on-premises private cloud and a public cloud, allowing data sharing and applications between the two environments. Some define hybrid clouds as “multi-cloud” configurations in which an organization uses more than one public cloud. Every hybrid cloud is a multi-cloud, but not every multi-cloud is a hybrid cloud.
A multi-cloud environment may exist to control sensitive data better or provide storage space for improved disaster recovery. Sometimes, it may happen by chance (usually due to shadow IT). Having multiple clouds is becoming more common among businesses looking to improve security and performance by diversifying their environments.
What Clouds Are the Best?
The best cloud environment depends on your expected expenditure. If you choose a public cloud, you have unlimited access to resources but higher operational costs. On the other hand, a private cloud will require buying or renting hardware resources, thus increasing your capital expenses. Hybrid clouds provide the flexibility of using either operating expenses or capital expenses to scale.
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