What is the SSD :- SDD, or System Design Document, is a comprehensive document that outlines the design of a system. It is typically created before the actual implementation of a system and serves as a blueprint for developers to follow during the development process. SDDs are used to ensure that all stakeholders have a clear understanding of the system being developed and that it meets their requirements. There are several components of an SDD, including: System overview: This section provides an overview of the system being developed, including its purpose, scope, and objectives. Architecture: The architecture section outlines the high-level design of the system, including the hardware and software components, data flow, and data storage. Design specifications: This section provides detailed specifications for each component of the system, including the user interface, data structures, algorithms, and programming languages. Testing plan: The testing plan outlines the testing proce