Driving Business Efficiency through Divisions and Departments

Watch this video to understand:

What do we mean by a department or a division, in context of organizational structures?
What is the Relationship between, legal entity and divisions?
What happens when , a business division may include, one or many subsidiaries as well?
How Departments are used as a tool for, Segregation & Delegation?
How Divisions are used as a tool for operational control?
What are some of the basis for creating divisions?