Provide a detailed explanation of the benefits of using cloud computing in businesses. Your response should contain at least 5 paragraphs. Paragraphs are separated with the markdown divider: ***. Highlight at least 2 sections in your answer with markdown, i.e. *highlighted section*. Include keywords *flexibility*, *scalability*, *cost-efficiency*, *security*, and *collaboration* in the response. At the end of your response, please explicitly add a postscript starting with *P.S.*.
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