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I was required to prove that I had successfully installed and configured a backup solution across a large estate. I had a number of success criteria that had to be met. Checking all of these by hand (eye) would have been error prone, so I wrote a test to do this for me and an easy for management to read HTML report using PowerShell and Pester. The session has come from that situation and is about enabling you to provide an easy to read output to quickly and repeatedly show that infrastructure is as expected for a set of checks, also known as Operational Validation using Pester. There are many use cases for this type of solution; DR testing, installation, first line checks, presentation setups What is Pester? Pester is a Unit Testing framework for PowerShell which can be used for testing your code but also as shown in this session for validating your infrastructure. This is an excellent post by Adam Bertram to introduce Pester It is included with PowerShell on modern Operating Systems and free to download from