I have no idea, not believing this was possible until I stumbled on this thread. Literally, every old timer-regular poster has said dozens of times. it won't work. The solution has always been some form of Remote Desktop or Console. I'm still bewildered.
My shortcomings overlooked for a bit,
I have two major databases that have been the bases for all of my systems, they have about 50K lines of code each. The first one runs chemical plants, and runs perfectly smooth with dozens of remote users, all of them on VPNs, utilizing a local SQL Server. So that server setup in the cloud, would work. nothing is needed other that what can be done in SSMS.
Here's the opportunity: I have a Homebuilding system that has become completely obsolete having zero cloud value. Actually, not quite zero. It does have some limited cloud value, it talks to Outlook and sends calendar events to mobile devices, it interfaces with cell phones and makes phone calls including call data, it saves photos and other attachments on incoming email, and it send text messages.
All that is ok, but a nightmare to administer. It really need to be an ap or a data driven site. The rub is how comprehensive the main user interfaces are. The idea is to have the current front ends connect to cloud based SQL database and start building mobile connections for the field people. These would probably start out as PHP and then maybe aps next, haven't though it out that far.
So maybe you could tell me what services I would need.
Thanks for your interest.