Cloud computing is a new trend of online access to the files used by companies around the world. It creates a cloud of virtual space or business files and applications that can have all the employees are used. It requires a subscription to the firms use the services of a vendor for installations and adjustments can organize your data. Everything is ready for use when offline
With a central server reduces costs because it eliminates theNeed to purchase additional software and hardware maintenance is required, run by local servers. Clouds can be private, which limits the access server to a specific group, the public, which may be registered by each user on the Internet or virtual audience, where you get a cloud service through private funding. High-speed Internet is one of the main factors that have driven the growth of cloud computing.
Depending on how it works, cloud computing services can be classifiedin:
1.Software as a Service (SaaS): When this type are handled by registered software applications provider. Browser-based access allows individual applications that are used by the customer without the use of the license or server problems.
2.Platform as a Service (PaaS): These modules are to run across platforms and vendors to develop, manage business applications. And 'how to build all phases of creating a Web application on-line support, no additional softwareneeded in local computers.
3.Infrastructure as a Service (IaaS): This type can be considered as an extended version of the web hosting account. Virtual servers and data equipment can be purchased on a per-use basis.
Even if the end user does not have to discuss the installation and management of applications, which know no fear, I have a problem with this approach. Instances of the changing needs of the business proved too complex for this, that the provider hadto offer. Some companies classify data was too sensitive to be exposed outside the local firewall. The alignment of the cost for use in these cases does not fit the company's business plan.
An effective method was needed, which allows more flexible use of services and applications can easily be used in the new platform provided. This was solved by virtualization as part of a cloud approach. He made the applications run independent of the infrastructure. SeveralApplications may use a given server and run on all systems they needed. The application must be for this function, which in practice means that they are virtualized, self-sufficient. The operating system, middleware and databases in connection with the application form, the whole package together. This package does not owe its applicability to the provider or the end of the system is limited. It runs on the cloud, which is available online and calculates the duration andAmount of usage.
The advantages of cloud computing allows companies must start each application within a few days. Taxes are nothing compared to what amount of money can not buy too expensive to save the enterprise software and recruitment experts, is beginning.
