In subsequent releases and versions, CICS was able to exploit new Sysplex-exploiting facilities in VSAM/RLS, MQ for zOS and placed its own Data Tables, TD, and TS resources into the architected shared resource manager for the Sysplex -> the Coupling Facility or CF, dispensing with the need for most RORs. The CF provides a mapped view of resources including a shared timebase, buffer pools, locks and counters with hardware messaging assists that made sharing resources across the Sysplex both more efficient than polling and reliable (utilizing a semi-synchronized backup CF for use in case of failure).