VM Backup Vs Agent Backup

[DarrenWright66]

Greetings and new to Azure but hoping for some guidance.

When I view the Backup Items in the Vault there is Azure Virtual Machine and Azure Backup Agent. The AVM backup is scheduled for 11:30pm each night and snapshots all the relevant data for all the servers.

Why would I need to download and install the agent on a server and create another schedule backup of some of the folders/files.

I suspect I can create multiple backups in a day with the agent backup but cannot with the server snapshot. Is this the only difference?

Thank you

Darren

[#2]

@DarrenWright66 

On-premises - Back up files, folders, system state using the Microsoft Azure Recovery Services (MARS) agent. Or use the DPM or Azure Backup Server (MABS) agent to protect on-premises VMs (Hyper-V and VMWare) and other on-premises workloads
Azure VMs - Back up entire Windows/Linux VMs (using backup extensions) or back up files, folders, and system state using the MARS agent.

Azure Backup architecture and components 

https://docs.microsoft.com/en-us/azure/backup/backup-architecture