The building block of oragnisations should be small teams. The 'Two Pizza Rule' Is Jeff Bezos' secret to productive meetings: The more people there are, the less productive meetings will be.
Amazon´s Jeff Bezos has a "two-pizza team" rule: Teams should be small enough to be fed by two pizzas. Small teams ge more done, and spend lesss time worrying about who gets credit. Small teams are like families: they can bicker and fight, but they usually pull together at crunch times.