A model for the provision of IT services in which resources, software and data are delivered on-demand via the Internet. Instead of owning physical hardware or installing software on their own devices, users use services and resources hosted on remote servers. These services can include storage, computing power, databases, software applications and more. Cloud computing can be divided into several service models, including Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS). It offers a number of benefits, including cost efficiency, scalability, flexibility and ease of access.