CP (Cloud Platform) is a private type of cloud computing (over the Internet) that delivers the same advantages of a public cloud, including scalability and ease of use. However, using a proprietary design, a private cloud is dedicated to the needs and goals of a single organization. This differs from a public cloud, which services multiple organizations. Lenovo is not only the world's largest personal computer vendor by unit sales, but it also markets the ThinkPad and ThinkBook business lines of notebook computers as well as the IdeaCentre and ThinkCentre lines of desktops. Following this line of marketing, their CP is named ThinkAgile.