Requirements are usually documented in the BRD, software requirement and specifications (SRS) document, or in the Requirements section of the project management tools, such as Jira, being used by the team. Test scenarios and test cases are created in order to verify the stated requirements. It's important to ensure and track that all the requirements have corresponding test cases and are covered in the testing and verification phases. This is what the traceability matrix helps us manage.
The traceability matrix, also known as the Requirement Traceability Matrix (RTM), is a document that helps test professionals to establish a correlation between what they are being asked to test and what is being covered in the testing phase. It establishes a many-to-many relationship between the requirements and the test scenarios or test cases identified, which will be used to verify the linked requirements. The traceability matrix helps us to identify any leaks...