Design how objects communicate, share responsibilities, and respond to changes in your application.
Behavioural design patterns focus on how objects communicate and divide responsibilities. Instead of putting all the logic into one large class, these patterns help you organize behavior so different parts of your application can work together without becoming tightly connected.
Patterns such as Observer, Strategy, Command, State, Iterator, and Chain of Responsibility solve different communication and behavior problems. They are especially useful when application behavior changes based on user actions, state, or different business rules.
What you'll walk away knowing