Types of Cloud Services

Cloud computing has three most common types of cloud services to offer. Depending on the needs of users, any type of cloud computing service is used either individually or in combination with others. The following is a brief introduction to the three cloud service types, namely, SaaS, PaaS and IaaS.

● Software as a service (SaaS)

Users of SaaS rather than fully buy the license of various software hire the software at regular intervals and use it through an Internet browser. The variety of software provided by SaaS is very broad.

In this service model, the cloud-based applications are offered to the customer as a service on request. It is a single instance of the service running on remote computers “in the cloud”, owned and operated by others, and connected to the users’ computers over the Internet and typically a web browser. Social networking sites like Facebook, Twitter, Flickr and Google are all examples of SaaS, although users are able to access the services through any Internet-enabled device.

● Platform as a service (PaaS)

PaaS provides computers platforms for users of cloud computing. It is also the link between the other two services provided by cloud computing; SaaS and IaaS.

Some of the facilities that PaaS provides include hosting, implementation, test and application development, and application design. In addition, cloud service providers that offer PaaS include a set of features to design, test, implement, manage, and run applications. All these facilities can be used by both individual and business customers, by subscribing to a single package with all the features offered.

The platform-as-a-service (PaaS) model is a level above the software as a service setup and provides hardware, network and operating system so that a customer can design their own application and software. In order to meet the requirements of applications such as scalability and manageability, a predefined combination of operating system OS and application servers from PaaS vendors. For example, at any stage of the process to develop, test and ultimately host their sites, Web developers can use individual PaaS environments.

● Infrastructure as a Service (IaaS)

IaaS is the third type of computing across the cloud. Just like PaaS and SaaS, different software and hardware devices deliver on a cloud platform, while IaaS provides a virtualized platform. The process of hardware virtualization shows the users only the abstract computing platform instead of the physical functions. Such virtualization results in the creation of a so-called “virtual machine monitor” or “hypervisor”, which is the creation of the third part of the cloud computing, Interface as a service.

Infrastructure-as-a-Service (IaaS) is a basic computing and storage space provided by a standardized service over the network. This model has made the workload easier by consolidating and providing data center space, storage systems, network devices, servers, and so on. In addition, the customer can develop and install their own operating systems, software and applications.

There are a number of advantages of using cloud computer technology. However, any type of cloud service comes with its own set of advantages and disadvantages. In order to make the right decision, it is imperative that users carefully weigh the pros and cons.

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