Companies that sell various creative services.
Creative agencies sell various creative services, most often to other companies or organizations.
Agency: WPP Group
Explanation: Their primary “product” are creative consulting services for other companies.
Company that is not an agency: Microsoft
Explanation: A significant part of their revenue comes from services, but it is not their primary revenue source.
Accurate and up-to-date creative agency data is useful for many different organizations and purposes.
Here are a few examples: