Hybrid cloud: what is it and what is it for
Hybrid cloud is an infrastructure combining public and private clouds to provide the best benefits of both worlds. Find out everything you need to know about it.
The public cloud has many advantages for businesses. However, it also brings its share of constraints and challenges. In fact, many organizations prefer to stick to the private cloud or an on-premises infrastructure.
However, a study published by Nutanix in 2018 reveals that 91% of IT managers in companies consider that the ideal model is that of the hybrid Cloud , which combines the benefits of the public Cloud with those of the private Cloud .
Likewise, by 2019, analysts at 451 Research estimate that 69% of companies will rely on hybrid cloud environments and that 60% of workloads will be executed on some form of cloud service. So, a transitional strategy or an optimal compromise? Find out what you need to know about the hybrid cloud.
Hybrid cloud: definition
Before defining the hybrid cloud, it is important to understand the distinction between public and private clouds . In the case of a private cloud, the servers are dedicated to a single company. These servers can be on-site, or off-site.
In the case of a public cloud , the servers are shared between the different customers of a supplier. The servers are always off-site, since they are located in the supplier’s Data Centers.
According to Forrester Research, the hybrid cloud consists in connecting one or more public clouds to a private cloud or to a data center infrastructure on traditional site. To put it simply, it is therefore a clever mix of on-site and off-site IT resources.
More elaborately, the hybrid cloud is a cloud environment made up of private cloud resources on site combined with third-party public cloud resources connected to each other by an orchestration system .
According to the “official” definition of the National Institute of Standards and Technology , the hybrid cloud is “a cloud infrastructure composed of two or more distinct cloud infrastructures which can be private or public and which remain unique entities, but are connected by a technology standard or proprietary allowing portability of data and applications. “
Hybrid cloud: what are the advantages?
One of the main advantages of the hybrid cloud is that it makes it possible to transfer workloads and data between the public cloud and the private cloud in a flexible manner according to needs, demand and costs. As a result, businesses benefit from increased flexibility and additional options for the deployment and use of data.
The flexibility is indeed a major advantage of the hybrid cloud . For good reason, in the case of an on-site infrastructure, the management of resources requires time and money. Adding capacity therefore requires planning in advance. On the contrary, the public cloud is already ready and resources can be added instantly to meet the needs of the business.
Thus, by relying on the hybrid Cloud, a company will be able to exploit resources from the public Cloud when its needs exceed the resources available on the Private Cloud, for example during seasonal peaks. The hybrid cloud therefore makes it possible to take advantage of the elasticity necessary to cope with variations in demand which can be linked to multiple factors.
In parallel, as in the case of on-site storage of the private cloud, the hybrid cloud allows quick access to the most critical data . It is therefore possible to keep the frequently used data on site, and to transfer the “cold” data to the Cloud.
In addition, the hybrid cloud helps reduce business expenses thanks to the low costs of IT resources offered on the public cloud . Indeed, most public cloud providers offer their customers to pay only for the resources they consume. Unnecessary expenses are therefore avoided.
The hybrid cloud is also ideal for Big Data processing . For example, it is possible for a company to use hybrid cloud storage to store its data and to perform analytical queries on the public cloud where Hadoop (or other) clusters can be scaled to adapt to the most demanding computing tasks. more demanding.
Hybrid cloud: what are the disadvantages?
Despite its many advantages, the hybrid cloud is not suitable for all situations. For example, for small businesses with a limited IT budget , the costs of installing and maintaining private servers may be too high. So it’s best to stick to the public cloud.
In addition, an application requiring minimum latency is not always suitable for the hybrid cloud . It may be better to opt for on-site infrastructure. However, it all depends on the cloud provider chosen. It is therefore important to take into account both the application and the resources offered by the various cloud providers to decide whether it is better to opt for the public, private or hybrid Cloud.
Hybrid cloud: who are the main suppliers?
Many companies today offer hybrid cloud infrastructures. Among the market leaders, there is of course Amazon Web Services also known as AWS . The American company offers storage, networking, security, application deployment services and management tools in hybrid cloud.
For its part, Google Cloud has partnered with Cisco to offer an open hybrid cloud architecture . This architecture is based in particular on the open source containerization service Istio, allowing the user to connect and manage connections between services on site and in the Cloud.
Another supplier is HPE, which offers a solution that can be customized to meet the needs of the business. Likewise, Dell EMC Hybrid Cloud is a solution allowing companies working with large workloads to perform their digital transformation for better efficiency.
Recently bought by IBM for $ 34 billion , Red Hat offers various hybrid Cloud products such as RedHt Openshift and the Red Hat Cloud suite. Other suppliers include Oracle, VMWare, SAP with its HANA platform, and even Citrix .