Crowdsourcing is a process in which an organization outsources tasks, ideas, or information to a large group of people, usually via the internet. It involves a broad audience, the “crowd,” in contributing to a specific goal or project. The crowd can consist of volunteers, experts, professionals, or even the company's customers.

Referral recruitment, also known as an employee referral program, is a powerful recruitment strategy in which companies encourage their current employees to recommend suitable candidates for open vacancies.