What is cloud technology
Definition of cloud computing at first glance is very confusing: it is a model of providing ubiquitous and convenient network access to a common pool of configurable computing resources ( servers, applications, networks, storage and services) that can be quickly allocated and released with minimal management effort and the need for interaction with the provider.

In order to better understand what is cloud” computing, you can give a simple example: before, the user access e-mail resorted to a specific software (messengers and programs) installed on his PC, but now it just comes to the website of the company, whose services e-mail he likes, directly through the browser, without the use of intermediaries.

But this example is more suitable for private” clouds”. We are also interested in information technology business. Modern implementation began in 2006. Then the company introduced its Amazon Web Services infrastructure, providing not only hosting, but also provides customers with remote computing power.

Three models of "cloud"

There are three service models of cloud computing:

Software as a service (SaaS, Software as a Servise).

The consumer gets software - provider applications running on a cloud infrastructure.

Platform as a Service (PaaS, Platform as a Service).

The provider is prepared to deploy to the cloud infrastructure consumer created or acquired applications developed using the tools supported by the provider and programming languages.

Infrastructure as a Service (IaaS, Infrastructure as a Service).

The SP provides data processing means, storage, networking and other basic computing resources on which the user can deploy and run arbitrary software, including operating systems and applications provider, running on a cloud infrastructure.

Advantages of cloud services.
We can identify several advantages associated with the use of cloud technologies:


The access to the information stored on the cloud, can get anyone who has a computer, a tablet, any mobile device connected to the Internet. This implies the following advantage.


This user has no permanent attachment to a single workstation. From anywhere in the world, managers can receive statements and managers - to monitor the production


One important advantage of reduced costs that the user does not need to buy expensive, large computing power computers and software, and it is exempt from the need to hire a service technician to support IT-technologies.


The user receives the required service package only at the moment when he needed it, and pays, in fact, only for the amount of acquired functions.


All the necessary resources provided by your ISP automatically.

High adaptability.

Large computing power available to the user, which can be used for storage, analysis and processing of data.


Some experts argue that the reliability, which provide modern cloud computing, much higher than the reliability of local resources, arguing that few companies can afford to purchase and maintain a complete data center.