Use of a Redis backed ObjectStore is an obvious choice for cloud ready applications. It's designed for high availability with good support for features useful for implementing fast reliable transaction managers including clustering, scalability, sharding, failover, disaster recovery and split brain support amongst others. Most cloud providers offer Redis as a Managed Service further simplifying deployment options.

The store could serve as one of the puzzle pieces for various other cloud based issues such as, for example:

https://issues.redhat.com/browse/JBTM-3587
https://issues.redhat.com/browse/JBTM-312
https://issues.redhat.com/browse/JBTM-2959