What are Child Flows and when should they be used?

Question

Accepted Answer

Child Flows allow reusable automation logic to be called from other flows.
    

    Benefits:

    
        Code reusability.
        Centralized maintenance.
        Reduced duplication.
        Improved scalability.
    

    Example:

    
        Create Customer Flow
        Send Notification Flow
        Approval Flow
    

    
        Multiple parent flows can call the same child flow.

What are Child Flows and when should they be used?

Answer with Explanation