I'm running 7 XS (single core) Windows Virtual Machines that run CPUMiner (or minerd). They produce around 3.6 KHash/s per server, which is very low, but Azure servers don't have a GPU so we can't run GPU-based miners like cgminer. Here's a picture of the running servers: https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-frc3/14155...
Doing this is not profitable at all, unless you have free credits. I have a free MSDN Ultimate subscription that has $150 worth of Azure credits every month. Since I'm only running a very small and simple website, I have spare resources that I could spend on litecoin mining. This can hopefully produce around 1 LTC per month.
Yesterday I stopped running minerd on 2 of my servers and dedicated them to BOINC (cancer mapping). Ripple Labs will give you free Ripples (XRP) for donated computing power: https://www.computingforgood.org/
If you have any questions, please feel free to contact me.
Though, finding such ideas/customers is exponentially harder than installing mining software.