Engineering Principles for Sustainable Software Systems

Software architecture is not merely about writing code that works today; it is about ensuring that the system can adapt to business growth over the next five to ten years without requiring continuous rewrites.

### 1. Clear System Boundaries Every module must have a single clear responsibility. Interfaces between components should be well-defined contracts that do not leak internal database schemas or implementation details.

### 2. Pragmatic Technology Choices Choose tools based on real operational needs, team familiarity, and proven production stability rather than hype. Simplicity in production always beats unnecessary complexity.