The right engagement model depends less on company size and more on how clear your scope is and how long you expect to keep building.
When a project-based model fits
If the outcome is well defined, such as a launch, a migration or a new module, fixed milestones give you predictability and a clear finish line.
When a dedicated team fits
- Your roadmap keeps evolving as you learn
- You want engineers who build deep product knowledge
- You need to scale capacity up or down over time
Many teams start project-based and move to a dedicated model once the product is live and the backlog keeps growing.