What are the different Types of Cloud Computing?
The types of cloud computing available are originally three. However, new demands and opportunities have led to new types gaining ground, as follows:
In the public model (Public Cloud), the resources used by users are shared.
In it, the service provider makes resources available, such as virtual machines (VMs), applications or storage, to the general public over the Internet. Public cloud services can be free or offered on a “pay-per-use” model.
The public cloud is characterized by being a virtualized environment, that is, designed by virtual machines on a set of servers (cluster). Despite the sharing of resources by users, each tenant in the public cloud has their data isolated from the others and both their privileges and access to them are individualized by user and password .
Another characteristic of the public cloud is the reliance on the use of high bandwidth to transmit data quickly to a large number of users. As for storage, it is usually redundant, with data replication in different locations, which results in high resilience and security.
The most common examples of this type are those we currently use to store our private data (documents, photos, music, etc.), such as cloud storage services .
As in the public, the private cloud - sometimes also referred to as the corporate or internal cloud - serves computing resources of various types (IaaS, SaaS, CaaS, etc.) also in a virtualized environment, but which are accessible in a restricted way, that is, by a single customer or company.
In this type, due to the more specific and even more critical needs of the user, there are better levels of performance, security, privacy and control of resources and data.
Based on the detailed knowledge of the needs of the organization / client that makes use of the private cloud, customization is possible in order to offer the service in the exact measure of demand, while avoiding waste of resources, idleness and, on the other hand, undersizing consequent performance problems.
The scalability and elasticity of private clouds, allow the customer to make adjustments to adapt quickly and easily whenever there is a change in demand or new needs, also at a much more attractive cost than the traditional model of local computing.
As you can imagine, the hybrid cloud is when the complementary use of the two previous cloud models is used.
In terms of example, to facilitate understanding, imagine that your company has a large volume of data stored remotely (DaaS), with part of this data being more sensitive to security, integrity and confidentiality and another part of it, being associated with non-data. so crucial and even in the public domain.
A DHCP Engineer (dynamic host client protocol) is an IT professional usually involved in the maintenance of the connectivity of network for an organization.
In a case like the one above, one can adopt the Private and Public model, respectively for the first and second cases and thus characterizing a hybrid cloud.
The use of the hybrid model, can now be done in a very simple way and depending on the case you cannot distinguish when you are using the private or public cloud, as the providers provide both in an integrated way to facilitate management and your everyday use.
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