This suggests providing a skeleton of an algorithm in operation, and deferring a few steps to subclasses. The template method lets subclasses redefine a few specific actions of a defined algorithm without changing the algorithm structure.

The following are the benefits:

• Fundamental technique for code reuse
• Allows partial implementation of business process while delegating implementation-specific portion to implementation objects (flexible in creating prototypes)
• Helps implement the Hollywood principle (inverted control structure, Don't call us, we will call you)

Impacts are as follows:

• Sequence of flow might lead to confusion
• High maintenance cost and impacts are high on any changes to the code