Software Testing is the process of evaluating a software application to ensure that it meets the specified requirements and fit for its purpose. The primary goals of software testing are identifying defects, validate that the software meets user expectations and enhance its overall quality. It ensures that the software functions as intended and delivers a positive user experience.

Writing an effective bug report is essential for providing software developers with all the necessary information to understand, reproduce and resolve the issue. A well-documented bug report saves time and ensures a smoother debugging process. Writing a comprehensive bug report helps software developers quickly understand the issue and reduces back-and-forth communication. It's a key practice for effective bug tracking and issue resolution in software development.

Exit criteria in software testing are a set of predefined conditions or requirements that must be met before a software testing phase or software testing project can be considered complete and the software can move on to the next stage of development or release.

Entry criteria in software testing refer to the prerequisites that must be met before testing activities can commence in a software development project. Entry criteria typically vary depending on the specific testing phase or level. The specific entry criteria may vary from one project to another, depending on factors like the software development methodology (e.g., Agile, Waterfall), project size and the organizational processes.

Ever wondered, how do you measure testing productivity or testing effectiveness? When to say testing is complete? In all such questions, QA metrics come to the rescue. QA metrics allow test leads or managers to take decisions on various situations encountered in the project life cycle. Tricky part is that QA metrics make sense only in the given context. For example, for one project 95% pass percentage is good to go live but for a safety-critical application anything less than 100% is life-threatening.