When developing out TFS 2015/2107 build and release definitions, it is good to log your steps when you queue out a build or release. I write out to the logs when I'm using any of the PowerShell tasks ('Run a PowerShell script' or 'Execute PowerShell scripts on remote machine(s)', for example) in a build or release.
There is, however, a good and bad way to log in a PowerShell script in VSTFS 2015/2017.
In your PowerShell tasks, do NOT use Write-Host, as this will fail when you try to run a Build or Release.
Instead, use Write-Verbose in the PS script and you will get the results you need.
