Staffing refers to the process of acquiring, maintaining, and developing an organization's workforce. It includes human resource planning, recruitment, selection, onboarding, training, and development. The key aspects of staffing are determining current and future human resource needs, attracting qualified candidates, evaluating applicants to select the best candidates, integrating new hires, and developing employees' skills over time. Staffing aims to put the right people in the right jobs to meet organizational goals.