Describes the Parallel keyword, which runs the
activities in a workflow in parallel.
The Parallel keyword runs workflow activities in parallel.
This keyword is valid only in Windows PowerShell Workflow.
The commands in a Parallel script block can run concurrently.
The order in which they run is not determined.
For example, the following workflow includes a Parallel script
block that runs activities that get processes and services on
the computer. Because the Get-Process and Get-Service commands
are independent of each other, they can run concurrently and in
Running commands in parallel is very efficient and reduces
the time it takes to complete a workflow significantly.
To run selected commands in a Parallel script block in
sequential order, use the Sequence keyword. For more
information, see about_Sequence.
To run a Parallel script block on items in a collection,
use the ForEach or ForEach -Parallel keywords.
"Writing a Script Workflow" (http://go.microsoft.com/fwlink/?LinkID=262872)