Many teams start with project delivery to ship a focused first release, then move contributors into staff augmentation once the product has a stable operating rhythm.
Others begin with one augmented seat to reduce risk, then expand into a scoped workstream when the outcome is clear enough to own as a project.
The useful question is not which model is better in general. It is which ownership shape matches the next 30 to 90 days of work.
Start with a build
Ship an MVP or first release with project delivery, then embed talent once rituals exist.
Start with a seat
Prove collaboration with one or two contributors, then scope a workstream if ownership needs grow.
Review every quarter
Revisit the model when leadership bandwidth, product stage, or stream complexity changes.