What do you like best?
Azure backup work with both physical servers and virtual machines, it is very simple to configure and does not requires any additional hardware for your on-premise infrastructure, it uses Azure BLOB storage as backup location which can provide desired redundancy and availability of your backups. Solution work in pair with Azure Site Recovery, so you need only one service, to have Disaster Recovery for critical systems and backups for systems where significant downtime is affordable. To register server in Recovery Vault you just need to install agent and apply vault key to establish connection with service. To restore server even after it was physically destroyed or replaced with new one, you just need to register it in recovery vault and point it as destination for restore
What do you dislike?
You will probably not need any servers to be restored from backup, but in case you will, restore can utilize a lot of outbound traffic from Azure, that can affect your monthly bill. But it anyways cheaper that dedicated backup hardware in data center, which can also be destroyed by disaster
Recommendations to others considering the product
Solution is very simple to manage, so you can engage advanced junior\middle level of staff to work with it
What business problems are you solving with the product? What benefits have you realized?
Backup for non-production and not business critical systems