Private, public, hybrid, multi – Which cloud type to choose?

When your company decides to move to cloud, the next step is to choose the right type of cloud.

Types of cloud deployments

Private cloud, also called internal cloud or corporate cloud, means having a cloud environment dedicated for just one company. Private cloud provides higher security and privacy, which are needed in certain industries for regulatory reasons when organization needs to store and process confidential data or carry out sensitive tasks. It also gives more control for the company, which on the other hand requires more resources in hardware management.

Public clouds, in contrast to private clouds, provide services to multiple clients using the same shared, external infrastructure. The best-known public cloud service providers are Microsoft Azure and Amazon Web Services (AWS). With public clouds, companies can save the expensive costs of having to purchase, manage and maintain on-premises hardware and application infrastructure – the cloud service provider is responsible for all management and maintenance of the system. Public clouds can also be deployed faster than on-premises infrastructures and with an almost infinitely scalable platform. From an employee’s point-of-view the biggest benefit is accessibility: Every employee of a company can use the same application from any office or location using any device as long as they can access the Internet.

It’s also possible to use hybrid cloud where private and public clouds are combined. As stated by AWS, hybrid cloud architecture is the integration of on-premises resources with cloud resources. For example, an enterprise can deploy an on-premises private cloud to host sensitive or critical workloads, but use a third-party public cloud provider to host less-critical resources, such as test and development workloads. By allowing workloads to move between private and public clouds as computing needs and costs change, hybrid cloud gives businesses greater flexibility and more data deployment options. The challenge is naturally to get the private and public clouds interact seamlessly.

Multi-cloud is another way of using more than one cloud platform, that is cloud services of two or more cloud vendors are used (rather than several deployment modes such as public or private cloud).

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