• Epicor ERP 10 is fully supported on Azure Infrastructure as a Service (as is Epicor 9). Epicor operates many ERP instances on Azure for customers today, mainly for auxiliary ERP instances used for piloting, training, or migrations.
• Epicor uses Azure for its primary development and QA cloud capacity requirements.
• ERP 10 was built to be compatible with Microsoft Azure Platform as a Service (PaaS), including SQL Azure.  Epicor is waiting for higher performing SQL Azure services, which are also forthcoming, before releasing ERP 10 for Azure PaaS.
• Like other enterprise software partners, Epicor is waiting for higher IOPS (I/O operations per second) to become available to put our larger workloads (such as multi-tenant SaaS) on Azure.  Amazon has recently released their high-IOPS instances, so we suspect Microsoft won't be far behind.
• Epicor has a number of co-location hosting facilities under contract for 12-24 months into the future. It would not make sense to unplug that capacity given this current contractual scenario.

Epicor execs DID NOT tout Microsoft Azure as a deployment option during its interview with InformationWeek, but analyst Frank Scavo says this represents a change. "This bugs me, because in 2012 at [its] Insight event, Epicor announced they were going to Azure. See my blog post," commented Scavo on Twitter. It's uncertain whether there has been a change in policies because the company didn't say anything on the matter. I'm seeking and will add any comment here from Epicor clarifying its stance on deployment on Azure.