빈번하게 변경되므로 추상화와 제어의 역전을 통해 변경으로부터 안전하게
UI, Web, DB, External Interfaces, Devices
- Network (HTTP, API, Socket)
- UI(Web UI, ViewController, Activity)
- DB (SQL, NoSQL, In-Memory)
- Library and Framework
- I/O device(touch screen, keyboard, speaker etc.)
Seonglae Cho
Seonglae Cho