The minimum size for a product team is usually two engineers and a product manager, and if the team is responsible for user‐facing technology, then a product designer is needed, too. Fewer than that is considered below critical mass for a product team. On the other end, it's really difficult for one product manager and product designer to keep more than about 10–12 engineers busy with good stuff to build. Also, in case it's not clear, it's important that each product team have one, and only one, product manager.
