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(1) is the selling of a service or product through pricing, distribution, and promotion.
(2) is a subject of marketing that involves paying to place your message in more traditional media formats, from newspapers and magazines to radio and television to the Internet and outdoors.
(3) is the marketing of an organization and the use of unbiased, objective, third-party endorsement to relay information about that organization's products and practices.
What is "Marketing", "Advertising", and "Public Relations"?