I haven't seen any limitations when it comes to scalability. The three affiliate companies that we converted to ISPW were very different in size. The first one was the smallest, and had a lot of vendor code rather than customized code. The second affiliate had much more customized code and was medium in size, while the last one was our largest and had a lot of custom code and some very old code.

Our support teams are in five different locations and two different countries and there didn't seem to be any problems with that as far as access and speed. 

It seems to be very scalable. There is considerably more scalability and functionality than we had with ChangeMan.

I would rate the scalability of this solution a nine, on a scale from one to 10, with one being the worst and 10 being the best.