https://www.techtarget.com/searchitoperations/feature/DevOps-lab-Learn-immutable-infrastructure-with-this-Vagrant-tutorial
DevOps lab: Build Vagrant VMs to learn immutable infrastructure | TechTarget
This HashiCorp Vagrant tutorial helps IT ops professionals understand and implement immutable infrastructure by creating Vagrant VMs in a DevOps lab.
to learnimmutable infrastructuredevopslabbuild