Internal communications (IC) is the function responsible for effective communications among participants within an organization. The scope of the function varies by organization and practitioner, from producing and delivering messages and campaigns on behalf of management, to facilitating two-way dialogue and developing the communication skills of the organization's participants.

Public relations (PR) is the practice of managing and disseminating information from an individual or an organization to the public in order to influence their perception. Public relations and publicity differ in that PR is controlled internally, whereas publicity is not controlled and contributed by external parties. Public relations may include an organization or individual gaining exposure to their audiences using topics of public interest and news items that do not require direct payment. The exposure is mostly media-based, and this differentiates it from advertising as a form of marketing communications. Public relations aims to create or obtain coverage for clients for free, also known as earned media, rather than paying for marketing or advertising also known as paid media. But in the early 21st century, advertising is also a part of broader PR activities.