Public Cloud, Private Cloud, Hybrid Cloud, Multicloud … with the the arrival of the internet, Cloud computing has become an ever-present reality that is constantly evolving. How do we define the different types of Cloud? How is Multicloud different from Hybrid Cloud? What are the advantages and characteristics of each solution? Here is an article that will help you clarify…
What is a private, public or hybrid Cloud ?
Here are some fundamentals to remember: in the world of Cloud computing, the terms public Cloud, Private or Hybrid refer to different Cloud infrastructures that each respond to specific company needs.
Focus on Public Cloud offerings
First, Public cloud offerings are flexible and open infrastructure, managed by a third-party provider. Several users, whether individuals or companies, can access the infrastructure via the Internet. With public Cloud, the same I.T. resources are provided by one supplier and shared by multiple users. The value of Public Cloud can be summarized as the possibility to use I.T. resources with owning them. For example, public Cloud services include VOD (Video on Demand) services or even document storage services like Google Drive, Hubic or Drop Box.
Focus on Private Cloud offerings
Second, a private Cloud is an entire infrastructure dedicated to a unique company. This infrastructure can be managed internally or by a third party and hosted internally or externally. If the Cloud is hosted by a service-provider, the collaborators of the company can only access it by secure networks called VPN. The private Cloud is particularly suitable for big companies or ones whose activity requires strong protection regarding data criticality and security. For example, a private cloud will allow a rigorous database to be used with a budget that is better controlled than it would be on a public Cloud.
Focus on Hybrid Cloud
Third, hybrid cloud? A hybrid cloud is a mixed structure, an alternative solution that offers a combination of private and public Cloud resources. A company that uses a hybrid Cloud can, for example, use public Cloud occasionally during peak activity and the rest of the time, settle for resources available internally in its private Cloud. The goal of a hybrid Cloud is, therefore, to make the most of these 2 services in order to create an optimal solution. Hybrid Cloud facilitate data, application and service transferability. They also offer offer more choice in terms of deployment models.
Hence, all of these types of Clouds offer users an access to three types of services. The company (or individual) is able to access infrastructure as a service (Iaas), platform as a service (PaaS) and software as a service (SaaS) through those various offering.
The Multicloud or the future of Cloud computing ?
Companies are slowly being convinced to integrate a public Cloud into their IT system. They thus move to hybrid Clouds. The companies that choose to do so are confronted however with a new problem: how to choose the right Cloud provider? Applications have different and sometimes contradictory needs and constraints. A Multicloud strategy can help design a customized solution. This solution can then be adopted when managing different types of Clouds (public or private) within the same organization.
The process of being able to host a virtual infrastructure on-site and off-site increases I.T. flexibility and dynamism. However, it also means increasing complexity of self-service systems. Whether from a governance, conformity, financial control or even capacity planning perspective, Multicloud management and automation tools offer more visibility and coherence on all available resources.
No Cloud solution is able to do everything. Therefore, Multicloud allows different cloud resources to be linked in a coherent and operational manner. For example, when the material and software deployed independently by various members in an IT team, there’s a need to increases surveillance. It might not be necessary though to migrate the infrastructure and data to a dedicated system. Deployment of ‘’Shadow IT’’ in addition to existing Cloud usage also lead the way to the creation of a Multicloud within the company I.S.
The advantages of the Multicloud facing the hybrid Cloud
We’ve seen it: a Multicloud creates the deployment of many Clouds of the same type, which are public or private, provided by different suppliers. The hybrid Cloud involves the deployment of different types of Clouds (public and private) that will be linked by integration or orchestration functions.
A Multicloud can be composed of two public Cloud or two private Cloud environments. A hybrid Cloud can be composed of one Public Cloud and one Private Cloud environment. This can improve the transferability of workload. The two approaches can be combined and adopted at the same time. Most companies look to improve both security and performance in this way.
Companies want to have more options. Several Cloud suppliers can indeed hot specific applications. They can thus tailor the hosting service to the specific needs of a given application. The company can then optimize its operational budgets, security and the overall efficiency of the I.T. systems.
A Multicloud approach consists means more and more custom solutions. This allows deployment of an expertise and operational direction to handle the growing complexity of I.T. resources. In offering a center of unique services, supported by centralized directional portals, the Multicloud approach authorizes efficient management of several Clouds. This is why if the hybrid Cloud continues to be a growing trend. Most companies today will set up Multicloud strategies adapted to their activity. Lastly and especially, these strategies avoid dependence on only one supplier.