What is the difference between a private cloud, a public cloud, a hybrid cloud?

Cloud computing is a technology based on the virtualization of resources. Starting with real and tangible machines, the Cloud makes it possible to allocate resources more flexibly according to needs and make them accessible via the Internet. Thus, the services will be accessible worldwide provided there is an internet connection. For users, these resources do not materialize directly, which is the origin of the name «Cloud».

Accessible in many forms whose acronyms are probably familiar to you (SaaS/ PaaS or IaaS), virtualization is gaining ground among individuals, but also companies. They were very reluctant to bring their data to the “cloud”, mainly for security reasons. However, the brakes have been gradually erased and compensated by the many benefits of the Cloud.

Today, almost all services or applications can be deployed in the Cloud, but the differences between different types of Cloud are not always clear to everyone. Indeed, whether public, private or hybrid, all Clouds meet different needs or issues.

What do all Clouds have in common?

Whether it's a public, private, hybrid or multiCloud cloud, everyone has the ability to mine, aggregate and share compute resources from a network. They are created from the same technological package, with an operating system and a management platform as well as APIs (application programming interface). Finally, they all have the option of integrating virtualization and automation tools.


It is said that a Cloud is public when data is divided and distributed among multiple users. It is the most «simple» cloud to deploy,indeed, the end user will purchase the right to use the provider’s Cloud infrastructure for a resource-based billing. The price depends on the time of use and the volume of resources available to the user. Public Cloud therefore has the huge advantage of being billed on a per-use basis..


PRIVATE CLOUD uses virtualization technologies to pool resources from physical hardware into shared pools. Its resources are dedicated, for the end customer, unique with a completely isolated access, it is deployable all over the world. This ensures the tightness of your infrastructure and more predictable costs, as billing is based on the proprietary machines you need and in which you are free to deploy the instances you need at any time.

Private clouds are preferred for companies with a predictable workload throughout the year. In addition, private clouds are known to be les plus sécurisés, as the work is protected by the end client’s firewall..


HYBRID CLOUD is a combination of a single environment connected by LANs (local area networks), WANs (wide area networks), VPNs (virtual private networks), or APIs (application programming interface). A hybrid cloud contains at least two clouds, for example one private cloud and one public, or two private or two public. It must be managed from a management and orchestration platform (Cloudstack at IKOULA). Hybrid clouds are the most versatile because they are compatible with all projects and environments.


To conclude, the best choice is the one that best suits your needs, your budget, the pace of work, data management. The Cloud will allow you to fully devote yourself to your core business while benefiting from complete and efficient IT security. Choosing IKOULA as a hosting provider means choosing a French company and datacenters that protect and secure your data on a daily basis.

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