What stages are included in the software testing life cycle (STLC)?

The Software Testing Life Cycle (STLC) includes the following main stages:

1. Test Planning — defining objectives, scope, resources, timelines, and testing methods.
2. Requirements Analysis — studying software requirements to identify testable functions and create test cases.
3. Test Design — developing test scenarios, test cases, and preparing test data.
4. Test Environment Setup — configuring hardware, software, and other resources for testing.
5. Test Execution — running tests, recording results, and detecting defects.
6. Reporting and Analysis — documenting test results, analyzing found errors.
7. Test Closure — assessing product quality, summarizing, preparing reports, and lessons learned for future projects.

Each stage is important to ensure quality and successful completion of testing.