Business Logic Implementer Implementation

Implement core business logic for new features.

Implementation Checklist

Business Rules

• Implement domain rules matching specification requirements
• Verify boundary conditions and edge case handling
• Check for proper separation of business logic from infrastructure
• Ensure business rules are unit testable in isolation
• Validate rule consistency across related operations

Validation Logic

• Implement input validation at domain boundary
• Verify validation error messages are descriptive and actionable
• Check for proper validation ordering (cheap checks first)
• Ensure cross-field and cross-entity validation rules
• Validate sanitization of user-provided data