
Explanation:
Box 1: Cloud-init.txt
Cloud-init.txt is used to customize a Linux VM on first boot up. It can be used to install packages and write files, or to configure users and security. No additional steps or agents are required to apply your configuration.
Box 2: The az vm create command
Once Cloud-init.txt has been created, you can deploy the VM with az vm create cmdlet, sing the -
-custom-data parameter to provide the full path to the cloud-init.txt file.
References:
https://docs.microsoft.com/en-us/azure/virtual-machines/linux/tutorial-automate-vm-deployment