Smoke Testing vs Regression Testing

Smoke testing checks basic stability

A smoke test answers one question: is this build stable enough for deeper testing? It should be small, fast, and focused on critical flows such as login, navigation, and core actions.

Regression testing checks what might have broken

Regression testing is broader. It verifies that recent changes did not break existing behavior. The scope depends on the release risk, affected areas, and confidence in automation.

Keep smoke tests lean

If your smoke test takes hours, it is no longer a smoke test. Use it as a quick confidence gate, then move into targeted regression.

Let risk decide scope

A login change should trigger authentication checks. A reporting change should trigger export, filter, permissions, and display checks. Regression should follow risk, not habit.