Cloud computing is the delivery of applications, systems, or infrastructure services over a network. Organizations use cloud services from a service provider to save money from having to provide that service themselves. Cloud-based services realize an economy of scale since they have a single system accessed by many customers. The provider uses logical separation to make each company separate from another company. Thus, the company using these services has reduced costs and a reduced need for specialized expertise, leaving it free to focus on its core competencies.
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