Advocates say that cloud computing allows businesses to avoid the initial costs of infrastructure (for example, buying servers). In addition, it allows organizations to focus on their core businesses rather than spending time and money on IT infrastructure. Advocates also state that cloud computing enables businesses to get their applications up and running faster, with improved manageability and less maintenance, and enables information technology teams to more quickly adjust resources to meet business demand Fluctuating and unpredictable. Cloud providers typically use a "pay as you go" model. This will lead to unexpectedly high charges if the administrators do not adapt to the cloud pricing model.