Why this decision matters
Separating models, interfaces and business logic during prototyping, with explicit quality boundaries, reduces ineffective rewriting in formal development.
Avoiding duplicate work does not mean deploying prototype code directly. It means separating reusable components from temporary exploration and preserving migration paths.
Conditions to confirm before development
- Separate data, models, service interfaces and user interaction
- Use replaceable model adapters and stable input-output formats
- Record temporary dependencies, hard coding, test and security gaps
- Review which assets to reuse, refactor or discard before formal development
Implementation and delivery approach
Validate the critical path with basic version control, separated configuration and test samples, then add permissions, performance and operational engineering later.
At the transition, produce an asset inventory, reuse decisions, refactoring tasks, interface baseline and production-gap list.
Acceptance boundary
Some exploratory code should be rewritten. Preserving unsafe or unmaintainable code solely for reuse transfers risk into production.