William - Sage 100 ERP online is a Citrix / Terminal Server Solution. We were in the running to be the endorsed solution back in the Nina Smith days and then she was gone and Sage decided to become a hosting company. It is currently hosted at Quality Technology Services in the Metro Atlanta facility (which is our backup location, QTS Suwanee across the street from Sage in Atlanta is our primary). Because of the limitations imposed by Sage (no integrations, no third party applications, no paperless office, no Crystal Designer, no scripting ...) 80% of customers are 5 users or less and 80% of those were 3 or less at last count. We put a 1 user system there as we can't make money at $159 for a 1 user system.
Because it is Citrix based you can either login through the web portal that both Sage and I-BN uses or you can use a Citrix Receiver on any device with our solution. We both used published applications so it looks like Sage 100 is running on your local machine, but we provide much more access than Sage for resellers. We have probably 30-40 different third party applications integrated with Sage 100 in our data center. It is surprising all of the restrictions since each customer is placed on a dedicated virtual server.
Upgrades are done upon request to my knowledge but will be required as versions are released. I believe migration is done from one server to another within a specified window as opposed to in place. With Sage, if any development (like Crystal) is required, the customer or partner must download the database to your local machine make the changes and upload. If paths are different, you must trial and error in this manner. At I-BN we also provide free development servers for 30 days to facilitate upgrades, but we have everything from version 3.41 to 2013 in our data center (please kill me, or those customers who force us to keep Windows 2003 server running). Since we can support most anything, lots of custom work is done in the environment as part of the upgrade or whenever.
Ben Glazer is the primary contact for Sage partners in our office and can be reached at 678-627-0646 x223 or
bglazer@i-bn.net. I can also answer any questions you may have.