Departmentation involves dividing a large organization into smaller, more specialized units. It is the process of dividing the functional organization into administrative sub-units. There are several types of departmentation including functional, product-wise, territorial, process-wise, customer-wise, and time-wise. Functional departmentation groups similar functions like production, marketing, finance into departments. Product departmentation organizes activities around specific product lines. Territorial departmentation divides the organization according to geographic regions.