Recruitment Process Outsourcing, or RPO, is a strategic relationship in which a company contracts with an outside provider to handle all or a portion of its hiring procedures. RPO providers provide end-to-end recruitment solutions that are customised to the needs of the business, functioning as an extension of the internal HR team in contrast to typical staffing agencies. Onboarding, interviewing, screening, sourcing, and even employer branding are all included in this.
https://troi.io/trois-rpo-model/