I have worked with Veeam. 

We used to use EMC Networker. We switched because it was very complex, and troubleshooting was an issue. We couldn't fix any problems and had to wait for our partner to fix them. Microsoft DPM was a lifesaver for us. It's very easy to administer and manage in any complex environment. 

We're actually in the process of switching products. In a few weeks, we'll be changing to Rubrik.

I'm aware of a few other solutions, such as Veeam and Acronis for example. I haven't used them directly. I am just aware of these as potential options. Microsoft was the best choice as it's included within a larger Microsoft license. 

We used an older version of VEEAM.  Our director was behind the adoption of DPM. We did so at his request.

Prior to using DPM, we used Zerto.

Zerto has a fast recovery of entire machines whereas DPM has an index so individual files can be searched. DPM is capable of backing up both physical and virtual machines.

Organization used BUExec but migrated to DPM because of Microsoft licensing and cost to maintain BUExec.