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Cloud computing refers to the provision of computing resources (processing, storage, networking, software) over the Internet, allowing on-demand access and flexible scaling according to user needs.

These services are offered in different models, such as Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS). Cloud computing has revolutionized the way businesses and individuals use and store data, offering benefits such as reduced costs, flexibility, mobility and efficiency. However, it has also posed challenges in terms of security and privacy.