In order to get various services of information technology, an organization always has to buy various kinds of equipment , servers etc. Valuable software is required to use or keep the server running and skilled manpower is required to maintain it. Only then can the organization get the right service from information technology. Often the need for a service is very temporary and even for that temporary service the organization has to go through a very costly process. Not only that , IT equipment is developing so fast that within a few years of purchasing various types of equipment with a lot of money , the financial value of the company is declining and the company is losing money. This situation has led to the emergence of a new type of service called information technology cloud computing. The idea behind it is very simple. Any user or any organization will be able to receive any type of service from the computer service provider using the network. The user does not have to do anything , the service provider will do everything for him. If the user's need is temporary he will use it temporarily and will pay for the service as much as he will receive the service . If we or any of our acquaintances send e-mails to anyone using yahoo, gmail then it is actually done using cloud computing. Or if someone searches for information in the search engine Google , cloud computing is also used in it. So we can say that cloud computing is the way to get some global benefits by connecting to the internet or web . This is a special service. The word ' cloud' here refers to a powerful server computer in a remote corner. Cloud services can be accessed from anywhere in the world through computers connected to the Internet. Cloud computing provides computing power , online services , data access , data space. Cloud computing is very important today. Examples are online backup services , social networking services and personal data services . Internet connectivity is essential for cloud computing. However, if there is a problem in the cloud or server for some reason, the work is lost.