Please read the product documentation as all of this is detailed there.
Thankyou for your response.
I gone thru wth link you share but seems i am still in confusion like apart from DEM worker will it be also interacting with other IaaS component? I know there is vRO work FLOW which will do the job but before vRO workflow triggered what all services is required to push the vm to invoke the vRO workflow.
Thanks in Andvance,