Public relations involves strategic communication between an organization and its various audiences to manage public perception and optimize reputation. It is a management function that uses research and communication techniques like press releases, social media, and events to influence opinion. While similar to advertising, PR differs in that it is not paid, uses two-way communication, and aims to serve both organizational and public interests through transparency and responsiveness to changing environments. The field has grown with increased corporate social responsibility, consumerism, and technological developments that require specialized communication of complex messages.