| Abstract [eng] |
Cloud computing can be defined as a new style of computing in which dynamically scalable and often virtualized resources are provided as a services over the Internet. Advantages of the cloud computing technology include cost savings, high availability, and easy scalability. Voas and Zhang adapted six phases of computing paradigms, from dummy terminals/mainframes, to PCs, networking computing, to grid and cloud computing. There are four types of cloud computing: public cloud, private cloud, hybrid cloud and community. The most common and well-known deployment model is Public Cloud. A Private Cloud is suited for sensitive data, where the customer is dependent on a certain degree of security. According to the different types of services offered, cloud computing can be considered to consist of three layers (services models): IaaS (infrastructure as a service), PaaS (platform as a service), SaaS (software as a service). Main cloud computing solutions: web applications, data hosting, virtualization, database clusters and terminal services. The advantage of cloud computing is the ability to virtualize and share resources among different applications with the objective for better server utilization and without a clustering solution, a service may fail at the moment the server crashes. |
