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 encountered 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 the Factory Method, Adapter, Observer, Strategy, Command, and Decorator.

For instance, you might determine whether a Factory Method or Adapter pattern fits a problem involving creating different types of devices or adapting an existing device to a different interface.

Similarly, you may choose between the Observer and Strategy patterns to handle notifications within a security system or manage various temperature control methods.

In another scenario, you could decide to use the Command pattern to encapsulate requests as objects for automation control within the smart home, or use the Decorator pattern to add functionalities to an existing lighting system flexibly.

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.