Cloud technologies are technologies of distributed digital data processing with the use of which computer resources are provided to an Internet user as online service. The programs are launched and give work results in web browser window on local PC. In this, all the necessary for work programs and their data are located on the remote Internet-server temporarily cashing on the client's side (PC, etc.). The technology advantage consists in having user's access to proper data but at the same time the user doesn't have to deal with operating infrastructure, operating system and software. The word "cloud" is figure of speech, which is representing a complex infrastructure that hides all the technical details. 

Cloud technologies are targeted at the following tasks solution:

1.Convenient operation with files on several devices: their edit and processing without transferring from one device to another, without the necessity to cope with software compatibility.

2.Solution of limited scope on your computer's hard disk or flash card.

3.Licensed software issue.

4.Ability to simultaneous operation with one document for several people.