Cloud computing involves storing data and accessing computer resources over the Internet instead of a local server or personal computer. It consists of three main components: client computers, distributed servers, and data centers. There are three main types of cloud services: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). Cloud computing can also be deployed through public, private or hybrid clouds. The benefits of cloud computing include improved agility, flexibility, and cost savings.