In the modern programming world, software systems become increasingly complex as projects grow in size and requirements diversify. This is where Structural Design Patterns play a key role as essential tools used by developers and designers to simplify complex systems, making them more organized, flexible, and easier to modify. These patterns aim to improve how objects are structured in software and manage relationships between them in ways that make the code more efficient and reusable. This course dives deep into a variety of structural patterns, such as Adapter, Bridge, Composite, Decorator, Facade, Proxy, and Flyweight. Each pattern offers innovative solutions to common design problems, such as handling incompatible interfaces, enabling flexible tree-like structures, or enhancing performance in complex systems. The course will guide you step by step, from understanding the theoretical foundations of each pattern to practical applications using UML, and finally, implementing real code, allowing you to see the true benefits of each pattern in real-world programming projects. You will acquire the skills needed to deeply analyze coding challenges, identify the right pattern to solve each problem, and discuss possible improvements to achieve better performance and greater system efficiency. The course also covers how to build flexible solutions that can easily be modified and developed in the future, without needing to rebuild the system from scratch. Whether you are a beginner or an experienced programmer looking to enhance the quality and design of your projects, this course provides you with the tools needed to write more flexible and sustainable code. Structural design patterns will be the key that makes your software systems more organized and professional, making them easier to manage and develop over time.