Design Patterns · Senior · Question 69 of 75

What is an architectural fitness function?

✓Correct answer: An automated check that guards an architectural property (bundle size, dependency rules, performance budget) over time
2A function measuring developer fitness
3A unit test of business logic

Explanation

Running them in CI keeps architecture from eroding silently as the codebase grows.

Further reading

Thoughtworks Radar: Architectural fitness function ↗

Test yourself

Take the Design Patterns · Senior quiz: questions and options are shuffled, and you get a review of your mistakes at the end.