An IS auditor is reviewing the release management process for an in-house software development solution.

 A staging environment is a replica of the production environment that is used to test and verify software before deploying it to production. A staging environment is most likely to have the same software version as production, as it mimics the real-world conditions and configurations that will be encountered in production. A testing environment is a separate environment that is used to perform various types of testing on software, such as functional testing, performance testing, security testing, etc. A testing environment may not have the same software version as production, as it may undergo frequent changes or updates based on testing results or feedback. An integration environment is a separate environment that is used to combine and test software components or modules from different developers or sources, to ensure that they work together as expected. An integration environment may not have the same software version as production, as it may involve different versions or branches of software from different sources. A development environment is a separate environment that is used by developers to create and modify software code. A development environment may not have the same software version as production, as it may contain unfinished or untested code that has not been released yet.