What does external communication focus on primarily?

External communication primarily focuses on building relationships with external stakeholders. This encompasses a range of activities including informing customers about products and services, engaging with suppliers, communicating with investors, and managing public relations. Effective external communication is essential for a business to establish and maintain a positive image, enhance customer loyalty, and foster collaboration with external entities. The ability to communicate effectively with external stakeholders can significantly impact a company's reputation and its ability to operate successfully in the market.

In contrast, the other options concentrate on internal aspects or specific types of communication within a business. For instance, interaction within the organization pertains to internal communication, which addresses how employees share information and collaborate. Maintaining internal harmony among employees also relates to internal dynamics and is not focused on external stakeholders. Sending reports to upper management is a form of internal communication that primarily serves the needs of the organization rather than engaging with outside parties.