System Design is the process of defining the architecture, components, modules, interfaces, and data for a system to satisfy specified requirements. It involves understanding the needs of users and translating them into a blueprint that guides the development of software applications. Effective system design ensures scalability, reliability, and maintainability, which are crucial for the long-term success of any software project. In the realm of Software Engineering, system design encompasses various methodologies and practices, including Agile and Waterfall. It also involves considerations for Database Design, API Design, and User Experience, ensuring that all aspects of the system work harmoniously together to deliver a seamless user experience.