April 2026
Intermediate
134 pages
1h 49m
English
There are two situations where you can have mixed variables during deployment:
Both infrastructure and software changes were deployed simultaneously.
In this case if you encounter an issue during the deployment or verification, it is hard to identify the root cause of the issue and would take much time and efforts to troubleshoot it.
Normally you test new software against stable and verified infrastructure. Also, you test new infrastructure against stable and verified software. If you have both software and infrastructure unstable and not separately verified, your test is not fully representative.
An old issue affects new functionality verification.
In this case when QA verifies new functionality right ...
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