Modularity is a fundamental principle of systems architecture that involves decomposing a system into smaller, independent modules or components that can be developed, tested, and maintained separately.

Requirements analysis aims to gather, analyze, and document the needs, expectations, and constraints of stakeholders to establish a clear understanding of the system's intended purpose, functionality, and limitations.

Data Flow Diagrams (DFDs) are graphical representations that illustrate the flow of data through a system, showing the sources, destinations, and transformations of data.

Trade studies are systematic evaluations of various design alternatives to compare their advantages, disadvantages, and potential impacts on system performance, cost, and feasibility.

Functional Decomposition is a technique for breaking down a system into smaller, manageable subsystems based on their specific functions or tasks.

System integration involves combining individual subsystems, components, and modules into a unified and functional system, ensuring that they work together seamlessly.

Consistency in user interface design refers to maintaining a uniform look, feel, and behavior across different screens, menus, and functions, enhancing user experience and ease of use.

System testing is conducted to evaluate the overall functionality, performance, and compliance of a system against its requirements and specifications.

Decomposition is a technique for breaking down a complex system into smaller, more manageable subsystems or modules, making it easier to understand, design, and implement.

System maintenance aims to keep the system operational, reliable, and performing as intended, including activities such as bug fixes, performance tuning, and security updates.

State Machine Diagrams are graphical representations that model the behavior of a system by depicting its states, transitions, and events, providing insights into how the system responds to different inputs and conditions.

System audits are conducted to assess whether a system meets specific standards, regulations, or internal policies, ensuring compliance and adherence to established requirements.

Confidentiality, integrity, and availability (CIA) are fundamental principles of security architecture, aiming to protect sensitive information, ensure data accuracy and consistency, and maintain system accessibility and functionality.

System deployment involves installing, configuring, and integrating a system into its intended operational environment, making it ready for use by end-users.

A Requirements Traceability Matrix (RTM) is a tool used to trace the relationships between system requirements and their corresponding design elements, ensuring that requirements are properly implemented and verified throughout the system development process.