Backup is a must. Primary hardware fails. Local backups can also fail or can be inaccessible. Remote backups can also fail, but if you have 2, 3 or even more backup copies in different places and on various medium chances are high enough that you will survive major incidents without data loss or too much of being offline. Talking about Microsoft Azure public cloud platform. But in case of any infrastructure environment you should have working and verified backup tools. Azure has its own. To keep those backups in secure remote place (in the context of Storage Account) you can