This is a fast way to manage Calendar permissions of a mailbox. Same commands are for both Exchange on-premises and Exchange
Microsoft offers for free it’s antimalware service. When you create a new VM you have the option to enable it.
Windows Server Backup is a very useful and free product and you easily backup files, applications (Exchange, SQL) and Hyper-V
I was looking for a free solution to have email notifications for Azure backup. After reading other blogs and technet