A customer profile informs you everything you need to know about the people you want to add to your customer list. A B2B customer profile should also include firmographic information about their target companies, such as company size, employee count, or annual turnover. Customer profiles are also known as buyer personas or user profiles. Each term means the same thing: a single document that lists your target customers' key demographics, interests, and behaviors. Customer profiles fit in perfectly here because you can personalize the post-purchase customer marketing campaigns you send to leads based on their interests.