Cloud computing is basically a great level of abstraction over the infrastructure that can help you to focus more on your business logic without having to worry about hosting or infrastructure needs. This is the general term used for delivering the hosted services over the internet. In cloud computing the computing resources are providing "as a service". Just like Electricity, you pay to electricity provider and get the electricity at your home and for this you don't need to create any infrastructure. Cloud computing provides you computing resources as a service where you don't have to focus on infrastructure requirements.
