What are the key factors that contribute to a successful marketing campaign? Your response should contain at least 3 placeholders represented by square brackets, such as [seasonal themes]. Highlight at least 2 sections in your answer with markdown, i.e. *highlighted section*. Your ENTIRE response should be in English, and in all lowercase letters. no capital letters are allowed. in your response, the letter 'a' should appear at least 10 times.

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