Welcome to the final unit of our smart home system project. In this final segment, you will tackle a series of real-world problems using various design patterns that you have seen throughout this course.

In this unit, you'll decide on the suitable design pattern for different problem statements and implement it accordingly. You will encounter scenarios where you must choose between patterns such as Singleton, Builder, Composite, Abstract Factory, Adapter, Strategy, Observer, Command, Decorator, and Factory Method.

For instance, you'll determine whether a Singleton or Builder pattern fits a problem involving managing a unique instance or constructing complex objects.

Likewise, you'll decide between the Composite and Abstract Factory patterns to solve a problem involving hierarchical data structures or families of related objects.

By the end of this unit, you will have practical experience not only in recognizing design patterns but also in applying them to solve complex, real-world problems efficiently.

Let’s proceed to the practice section and start applying these design patterns to build our solutions.