What is exploratory testing, what is regression and retesting, what bug life cycle

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Exploratory testing involves simultaneous learning, test design, and execution. Regression testing ensures new code changes do not adversely affect existing functionality. Retesting is done to verify that a fixed bug is resolved.

Exploratory testing is a hands-on approach where testers explore the application without predefined test cases. They learn the application while testing and design test cases simultaneously.
Regression testing is performed to ensure that new code changes do not adversely affect existing functionality. It involves re-executing test cases that may be impacted by the changes.
Retesting is done to verify that a reported bug has been fixed after developers have made the necessary changes. Testers re-execute the failed test cases to confirm the resolution.
Bug life cycle refers to the stages a bug goes through from identification to resolution. It typically includes stages like New, Assigned, Fixed, Retest, Closed, etc.

What is exploratory testing, what is regression and retesting, what bug life cycle

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