# Architecture Concepts

- [What is MVC](/v4.x-1/architecture-concepts/what-is-mvc.md)
- [What is ColdBox](/v4.x-1/architecture-concepts/what-is-coldbox.md)
- [How ColdBox Works](/v4.x-1/architecture-concepts/how-coldbox-works.md)
- [Testing Concepts](/v4.x-1/architecture-concepts/testing-concepts.md)
- [Functional Testing](/v4.x-1/architecture-concepts/testing-concepts/functional-testing.md)
- [Non-Functional Testing](/v4.x-1/architecture-concepts/testing-concepts/non-functional-testing.md)
- [Bugs Cost Money](/v4.x-1/architecture-concepts/testing-concepts/bugs-cost-money.md)
- [Static Testing](/v4.x-1/architecture-concepts/testing-concepts/static-testing.md)
- [Dynamic Testing](/v4.x-1/architecture-concepts/testing-concepts/dynamic-testing.md)
- [Developer Focus](/v4.x-1/architecture-concepts/testing-concepts/developer-focus.md)
- [Testing Vocabulary](/v4.x-1/architecture-concepts/testing-concepts/testing-vocabulary.md)
- [Testing Tools](/v4.x-1/architecture-concepts/testing-concepts/testing-tools.md)