An article from Ars Technica [1] on this topic makes the following point:
"Unlike most Azure compute resources, which are typically shared between customers, the Cray supercomputers will be dedicated resources. This suggests that Microsoft won't be offering a way of timesharing or temporarily borrowing a supercomputer. Rather, it's a way for existing supercomputer users to colocate their systems with Azure to get the lowest latency, highest bandwidth connection to Azure's computing capabilities rather than having to have them on premises."
Somewhat interestingly, this sounds like a bit like hybrid cloud except that it's hosted entirely in Azure datacenters rather than partially on-premises.
"Unlike most Azure compute resources, which are typically shared between customers, the Cray supercomputers will be dedicated resources. This suggests that Microsoft won't be offering a way of timesharing or temporarily borrowing a supercomputer. Rather, it's a way for existing supercomputer users to colocate their systems with Azure to get the lowest latency, highest bandwidth connection to Azure's computing capabilities rather than having to have them on premises."
Somewhat interestingly, this sounds like a bit like hybrid cloud except that it's hosted entirely in Azure datacenters rather than partially on-premises.
[1] https://arstechnica.com/gadgets/2017/10/cray-supercomputers-...