What are the key benefits of using a content management system (CMS) for managing a website? Your response should contain at least 3 bullet points. Use the markdown bullet points such as: * This is point 1. Highlight at least 2 sections in your answer with markdown, i.e. *highlighted section*. Include keywords *ease of use*, *flexibility*, *scalability* in the response. At the end of your response, please explicitly add a postscript starting with *P.S.*.

user