Public relations involves connecting an organization with its various publics to generate goodwill and maintain trust. It encompasses managing public opinion, reputation, and integrity. Comparing public relations and advertising, public relations differs in its use of media, emphasis on unpaid publicity over paid advertising, lack of direct control over messaging, and perception of greater credibility. Integrated marketing communication coordinates various promotional elements like advertising, public relations, sales promotion and social media to present a unified message focused on influencing behavior and building relationships with customers.