When is it necessary to design the system architecture?

Designing the system architecture is necessary at the early stages of development when requirements are formed and the overall structure of the application is determined. This helps to:

• Clearly understand what components are needed and how they will interact.
• Ensure scalability and support for the application in the future.
• Avoid technical debt and difficulties when adding new features.

In Android development, architecture is especially important for separating responsibilities between UI, business logic, and data (for example, using MVVM, MVP, or Clean Architecture). Architecture design should be carried out:

• Before starting the implementation of key features.
• When requirements change or the application is scaled.
• When integrating new technologies or libraries.

Thus, architecture is the foundation that ensures the stability and ease of maintenance of the application.