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Instead of depending on local servers or personal computers, cloud computing allows users to access and store data, apps, and computing resources online. With flexibility, scalability, and cost-effectiveness, it offers on-demand services like servers, storage, databases, networking, software, and analytics.

Pay-as-you-go cloud computing eliminates the need for significant IT infrastructure investments. Infrastructure as a Service (IaaS), which offers virtualized computing resources; Platform as a Service (PaaS), which provides a framework for developers to create applications; and Software as a Service (SaaS), which distributes software applications via the internet, are the three primary models through which businesses and individuals can access cloud services.

Additionally, there are various cloud computing deployment models, such as public cloud, where services are delivered online by outside providers like Microsoft Azure or Amazon Web Services (AWS); private cloud, which is utilized only by one company for increased security and control; and hybrid cloud, which blends aspects of public and private clouds for increased flexibility.

Organizations gain from cloud computing because it increases productivity, permits remote work, provides high-performance computing power, and ensures data backup and disaster recovery. Nonetheless, issues like internet dependence, data security, and compliance need to be taken into account.