A large customer may deploy their environment to inter-datacenters, however some customers who want settle their environment smaller requires anti-collocation for their high-availability system configuration. Without this option, we always need to check the instances are deployed onto different physical environment. It is really time consuming. Anti-collocation options should be effective for such kind of requirements.
On the other hand, there is a requirement of "collocation" for high performance computing usage which requires lower latency between compute nodes. Without this option, the elapsed time of computation is too long to use. Providing elasticity for high performance computing with this "collocation" option accelerates large volume usage for HPC/CAE workloads.
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