What is difference between smoke and sanity testing

Question

Accepted Answer

Smoke testing is a subset of regression testing, while sanity testing is a subset of acceptance testing.

Smoke testing is done to check if the software build is stable enough for further testing, while sanity testing is done to check if the specific functionality is working as expected.
Smoke testing is usually performed by developers before handing over the build to QA, while sanity testing is usually performed by QA engineers.
Smoke testing is a shallow and wide approach, covering all major functionalities, while sanity testing is a deep and narrow approach, focusing on specific areas.
Example: In smoke testing, a tester may quickly check if the application launches without any critical errors, while in sanity testing, the tester may focus on a specific feature like user login functionality.

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