What is Defect in Software Testing?

SDET Automation Testing Interview Questions & Answers

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What is Defect in Software Testing?

In software testing, a defect (also known as a bug or fault) is an actual occurrence of an error in the software system. It is a deviation from the expected behavior of the software system.

Defects can occur at any stage of the software development lifecycle, from the requirements gathering phase to the testing phase or even after the software has been deployed to production.

A defect is usually caused by a mistake in the software code or a failure to meet the specified requirements.

Defects can lead to serious consequences such as incorrect output, application crashes, and security vulnerabilities.

Identifying and fixing defects is an essential part of software testing to ensure the software is reliable and meets the needs of the users.

Defects can be classified into various types, such as functional defects, performance defects, usability defects, compatibility defects, and security defects.

The severity and priority of defects are usually determined by their impact on the software and the users.

Defects with higher severity and priority are usually addressed first to minimize their impact on the software system.