Recruitment process outsourcing, commonly called RPO, is an arrangement where an external provider runs all or part of an employer's hiring process as an extension of the internal team, under a service agreement with defined scope and service levels. Provider recruiters work in the employer's name and process rather than introducing candidates from outside.
Whatever the scope document says, which is why the scope document matters more than the label does. A broad engagement can cover demand intake with hiring managers, sourcing, screening, interview coordination, assessment administration, offer management, reporting, and the handover into onboarding. Narrower ones take a single slice, such as sourcing for one role family or screening during a high-volume campaign. The provider may bring its own recruiters, process design and technology, or work entirely inside the client's systems and follow the client's process. Candidates normally experience the employer's brand throughout and often never learn a provider was involved. That is the operating difference from agency work: the provider is accountable for how the process runs and what it produces, not merely for introducing people. Most providers work in the client's [talent acquisition software](/talent-acquisition-software) so records stay where the employer can see them.
Three shapes, with hybrids between them. End-to-end engagements hand over the whole recruiting function, or a defined region or business unit of it, on an ongoing basis with service levels and a management structure on both sides. Project RPO covers a bounded burst of hiring: a new site, a seasonal intake, a product launch, or an agreed number of roles inside a fixed window. On-demand or selective RPO adds capacity or expertise to specific parts of the process while the internal team keeps the rest, which suits teams that are structurally sound but temporarily under water. The choice usually follows whether the underlying demand is permanent or temporary. Handing a permanent function to a project engagement leaves a cliff when it ends, while using an end-to-end contract for a one-off surge builds a structure you then have to unwind.
By what is being bought. A contingency agency sells introductions, is paid when a placement happens, works from outside your process, and carries no responsibility for how the rest of your hiring runs. You take no financial risk if nobody is hired, and you gain no improvement in the process itself. Staff augmentation places individual recruiters into your team under your management, which adds hands while leaving the design, the standards and the results with you. RPO sits between them in a way neither resembles, because the provider takes responsibility for running an agreed part of the process to agreed measures and is paid for running it rather than per introduction. That shifts genuine operational risk outward, which is the point, and it also means a weak scope definition transfers accountability nobody can then enforce.
Five things, and they belong in the contract rather than in goodwill. The hiring decision stays with managers, since a provider can assess, recommend and shortlist, but selecting the person is not outsourced. Employer brand and candidate communication standards stay with the employer, because every message goes out in your name. Data ownership needs stating explicitly, including who holds the candidate records and what returns to you at the end. The definition of quality has to be yours, expressed in measures you agreed, or the provider will optimize for volume and speed simply because those are easy to evidence. Exit arrangements matter most and get written last: knowing how pipelines, records and reporting come back, and over what period, is what stops a transition becoming a standstill. Settle all of this before any part of the [hiring process](/how-to-hire) changes hands.
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