What do you mean by differentiation in organisation structure?

Differentiation implies differences in cognitive and emotional orientation in between managers in various departments and the differences within the formal structure of such departments. Integration consider to the quality of the state of collaboration which is needed to achieve unity of effort. Different departments are integral part of entire system. Design structure of one department may be different through that of the other, since each department is interacting along with the environment in a various way. On the whole objective of organisational designing must be integration of activities and authority roles and relationships existing within various departments.