What is regression testing A) Checking the application whether there is any impact on existing application due to add/delete of feature is called regression testing.

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Regression testing is the process of testing changes made to an application to ensure that existing functionality still works as expected.

It involves re-executing test cases that have been previously run to ensure that changes made to the application have not introduced new bugs or broken existing functionality.
Regression testing is typically performed after a new feature or bug fix has been implemented.
It can be done manually or through automated testing tools.
Examples of regression testing include testing a website after a new feature has been added, or testing a mobile app after a bug fix has been implemented.

What is regression testing A) Checking the application whether there is any impact on existing application due to add/delete of feature is called regression testing.

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