Four questions about ownership, runway and management time that settle the choice.
Staff augmentation and dedicated teams are often presented as if one were better. They are different tools. Which one fits depends on how your organisation works today, and four questions are usually enough to decide.
The two models in one paragraph each
With staff augmentation, engineers from a partner join your existing team. They attend your standup, take tickets from your board and report to your lead. You manage the work. The partner handles employment.
With a dedicated team, the partner supplies a complete unit, usually with its own lead. You set goals and priorities. The team plans and delivers against them and is accountable for the result.
Question one: who decides what gets built today
If your engineering manager or tech lead already assigns work each day and wants to keep doing so, augmentation fits. The new engineers slot into a structure that exists.
If nobody on your side has time for daily direction, a dedicated team with its own lead is the safer choice. Without direction, augmented engineers wait.
Question two: how much management time do you have
Every engineer you add needs reviews, answers and feedback. As a rough guide, a lead can look after a handful of people before their own output drops.
If your leads are already stretched, adding more people to their teams will slow everyone down. A dedicated team brings its own management capacity.
Question three: how long will the work run
Augmentation is easy to start and easy to stop, which suits a temporary gap: a launch, a migration, cover for parental leave.
For work that will run for a year or more, continuity matters more than flexibility. A dedicated team builds shared knowledge of your product and keeps it.
Question four: what happens when it ends
Ask where the knowledge goes when the engagement finishes. With augmentation it mostly stays with your own team, since they directed the work. With a dedicated team, plan the handover from the start: documentation, recorded decisions and an overlap period.
Reading your answers
If you answered "we do" to the first question and "enough" to the second, start with augmentation. If you answered "nobody" and "none", choose a dedicated team.
Mixed answers are common. Many companies begin with one or two augmented engineers, learn how the partner works and move to a dedicated team once the scope is clear. Choosing a model is not permanent, so pick the one that fits the next six months.