Marketing vs Public Relations
To briefly explain the difference between PR and marketing, marketing focuses on creating income opportunities by promoting and selling certain products or services.
PR (public relations) focuses on maintaining a good company reputation. Essentially, marketing focuses on promoting a brand's products with the intent of selling, while PR focuses on promoting a brand in order to maintain reputation.

Comparing Marketing and Public Relations
In comparison, the marketing department is primarily focused on attracting customers and leads. Direct marketing is directly related to sales and revenue generation. The ultimate goal of these processes is to attract potential and current customers and thus generate revenue.
While marketing is primarily concerned with promoting and selling a product, public relations (PR) focuses on creating and managing a favorable image of a company in the eyes of the public. Marketing is the business activity of promoting, advertising, and selling a company's services.
What's interesting about marketing in general is that although marketers themselves don't sell products, they greatly influence how products or services will be sold.
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