is there a way to backup about 50 devices (some Iphones, some Ipads) to the same Icloud account

I am the sole IT for a company that is using Iphones, and Ipads for all of our sales people. what we have had happen in the past is a sales person decides to quit but before he does, he will wipe out all of the info (customer contacts, sales information...) off of the Iphone, and Ipad. we are wanting to backupall of these devices(40-50 of them) to either the Icloud, or maybe there is another option? What I was reading is that the Icloud limits the conection to 10 devices. is there maybe a business icloud, or something like that? thanks for the info.

Jake