Autodesk,
Please consider adding new/additional C4R hosting sites, besides your current Amazon service. The 7 hour outage on 2/28/2017 could have been shorter, or maybe even not even noticed by users, if the service was mirrored somewhere else, so when Amazon went down, you could switch over to the other sites.
I have read through some forum posts that do indicate changes have been implemented to the background that should help in service continuity.
If Autodesk is currently not hosting the C4R service at more than one provider (Amazon AWS), then I think serious consideration should be given to finding other service providers to have multiple/mirror sites.