Quiz Entry - updated: 2026.07.31
What are the main types of software testing for web applications?
Web testing climbs four levels — unit, integration, system, and acceptance — each widening the scope from single functions to whole-business requirements.
* The four levels of software testing, each widening the scope from single units up to whole-business acceptance. *
| Test Type | Scope | Who |
|---|---|---|
| Unit | Individual functions/components | Developers |
| Integration | Multiple modules together | Developers/Testers |
| System | Entire application | Testers |
| Acceptance | Business requirements | Product Owner/Customer |
Testing criteria include functionality, efficiency, maintainability, portability, reliability, and usability (ISO 9126).
Go deeper:
Software testing — testing levels (Wikipedia) — how unit, integration, system, and acceptance testing differ in scope and who runs each.