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The Characteristics of Cloud Computing
Cloud computing or cloud computing is a term that is quite popular nowadays. The term is used on many services to define the technology used in providing the service. The number of cloud service providers worldwide, such as AWS (Amazon Web Services), Google, and Softlayer, making the term cloud is becoming increasingly familiar in the ears of the public. However, on the other hand, there are some services that use frills cloud that deviate from the definition of the cloud itself.

Therefore, it is important for us to understand the sense and the component technologies that are the current hype in order to choose a service cloud as needed. Cloud computing is a technology concept which facilitates service users to focus on the services hired, without having to manage the complexity behind the service. Review of models of cloud computing services, divided into three interconnected types, i.e. the Software as a Service (SaaS), Platform as a Service (PaaS) and Infrastructure as a Service (IaaS). Basically, the main difference in these three types of this service lies in the responsibility of the user and service provider to the services provided.

Simply put, SaaS cloud is a service that offers ready-made applications for users, either for the purposes of subscription or payment for the used portion only (pay-as-you-use). In fact, lately it's pretty much a SaaS can be used without charge. It is because vendors can gain profit through other means, such as advertising or sales of additional services (add-on/in-app purchase). One characteristic that is commonly owned by SaaS is a service that is easily accessible by users via various interfaces, such as via the web, desktop, or mobile app. SaaS is a pretty famous cloud service at this time. It can be seen from the large number of services that include various types of applications, such as e-mail/webmail, CRM (Customer Relationship Management) applications, and customer service.
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