System Design

"The software architecture of a system is a high-level description of the system's structure, its differente components, and how those components communicate with each other to fulfill the systems' requirements and constrainst"

There is a lot of ambiguity on system design, and it may be eased by well defined requirements

Scope of the Design

From low-level to high-level

1. Classes, structs
   • Organization and communications between objects inside of a program
2. Modules, packages, libraries
   • Similar to the latter, but for bigger codebase
3. Services, components, applications
   • Organization of separate components with a defined domain

Application > Library > Module > Class > Function

Software Development Cycle

1. Design
   • The output is the software architecture
2. Implementation
3. Testing
4. Deployment

flowchart LR
  A[Design] --> |Software Architecture| B
  B[Implementation] --> C
  C[Testing] --> D
  D[Deployment] --> A