ANSWER:
An organization is made up of different teams that works collectively in achieving the organization aims. The performance improvement of an organization depends on the performance improvement of each team in the organization, because it is this teams that makes up the performance of the organization. The performance of this teams are also dependent on the structure of the organization, because it is the organization that equip and train each team to develop and perform excellently in a task.
Therefore for an organization performance to improve, such organization must improve the performance of each team.