

A mirror copy enables the tester to reliably replicate customer-reported defects and gives the developers the precise steps required to solve them.

The test environment is often a mirror clone of the production environment. This data enables the tester to validate test cases that need a specific configuration. The test environment also includes the testbed, which is the data used to test the program.

A test environment helps the tester develop repetitive test configurations that remain consistent with the release of new software versions.
