AWS defines cloud computing as "the on-demand delivery of IT resources over the internet with pay-as-you-go pricing." Cloud computing offers a utility model where IT resources are available to users whenever, wherever, with a simple pay-as-you-go model. Cloud deployment refers to the infrastructure upon which cloud services are based and can be categorized into three types: public, private, and hybrid. Public cloud models provide scalability, savings, and ease of management, while private cloud models offer more security but are less scalable. Hybrid cloud models combine the benefits of both public and private clouds. Cloud services include Infrastructure as a Service (IaaS), Platform as a Service (PaaS), Serverless Computing, and Software as a Service (SaaS). IaaS provides raw computing resources, PaaS offers development tools and business tools, Serverless Computing automates cloud infrastructure management, and SaaS delivers web-based applications over the internet. Cloud computing aims to offer an elegant solution to businesses' problems by providing flexible backend infrastructure without upfront CapEx investments, scalability, and agility to expand quickly and test new markets.