| Aspect | Bug | Software Tester |
|---|
| Role | Identifies and reports defects in software | Evaluates software quality through testing and validation |
| Credentials | None specific, but technical knowledge helps | Often has testing certifications or QA training |
| Work Environment | Developers, QA teams, or support teams | Testing labs, development teams, or remote |
| Industry Usage | Commonly used in software development and QA |
While a bug is a defect or error found in software, a software tester is responsible for systematically testing the software to find bugs. Bugs are the issues reported during testing or after deployment, whereas testers proactively seek out bugs to improve software quality.