Maintainability
The ease with which a product or service can be modified to correct faults, modify or extend properties.
Impact
Low maintainability leads to high Technical Debt. If code is hard to change, it becomes "Legacy" the moment it is written.
Weinto take
We optimize for Readability over Cleverness. Code is read 10 times more often than it is written. We enforce style guides and clean code principles because maintainable code is the only code that survives.