What is the difference between regression testing and sanity testing?

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Regression testing ensures that new code changes do not adversely affect existing functionality, while sanity testing quickly checks if the software is ready for further testing.

Regression testing is performed after code changes to ensure that existing functionality is not affected.
Sanity testing is a quick test to check if the software is ready for further testing.
Regression testing is comprehensive and covers all areas of the application.
Sanity testing is a subset of regression testing and focuses on specific functionalities or areas.
Example: After fixing a bug, regression testing is done to ensure the bug fix did not introduce new issues. Sanity testing is then done to quickly check if the software is stable enough for further testing.

What is the difference between regression testing and sanity testing?

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