This document provides an overview of cloud computing, including its key concepts and models. Cloud computing allows users to access applications, data storage, servers and other resources over the Internet. There are various deployment models for cloud computing including public, private, hybrid and community clouds. The main service models are Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS). Cloud computing provides advantages such as low costs, increased storage and computing power, and easier software access from anywhere via the Internet. However, it also has disadvantages like needing a constant Internet connection and potential security issues.
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