What is the difference between regression testing and smoke testing?

_Difference between Regression Testing and Smoke Testing:_ Regression testing and smoke testing are two distinct types of software testing: _Regression Testing:_ 1. Purpose: Ensure changes or fixes didn't introduce new defects or affect existing functionality. 2. Scope: Test the entire application or system, focusing on areas affected by changes. 3. Depth: In-depth testing, covering various scenarios and user journeys. 4. Frequency: Performed after changes, fixes, or updates. _Smoke Testing:_ 1. Purpose: Quickly verify critical functionalities and stability. 2. Scope: Limited to critical functionalities and high-risk areas. 3. Depth: High-level testing, focusing on basic functionality. 4. Frequency: Performed immediately after a build or deployment. _Key differences:_ 1. *Purpose*: Regression testing ensures changes didn't introduce new defects, while smoke testing verifies critical functionalities. 2. *Scope*: Regression testing covers the entire application, while smoke testing focuses on critical areas. 3. *Depth*: Regression testing is in-depth, while smoke testing is high-level. 4. *Frequency*: Regression testing is performed after changes, while smoke testing is performed immediately after a build or deployment. In summary, regression testing is a thorough testing process to ensure changes didn't introduce new defects, while smoke testing is a quick verification of critical functionalities and stability. Do you have any further questions about regression testing and smoke testing? read less