Address telecommunications and external service resilience + cloud and third-party contingency per NIST SP 800-34 Rev 1 Section 3.4.5 + Section 4 + modern cloud-era guidance. Telecommunications services resilience per Section 3.4.5 + Appendix E (Continuity Considerations for Telecom Services): (a) diverse providers + diverse circuits + diverse entries into facility + monitoring + automatic failover + tested manual failover, (b) Government Emergency Telecommunications Service (GETS) + Wireless Priority Service (WPS) registration where applicable, (c) emergency communications equipment + satellite phone + radio + emergency contact procedures. Cloud and third-party service contingency: (a) cloud provider Service Level Agreements covering availability + recovery commitments + provider contingency capability per region + cross-region replication + provider transparency on incidents + provider contingency plan summary, (b) third-party service provider contingency assessment via SOC 2 Type II + ISO 27001 + ISO 22301 + provider exercise outputs + provider BCP attestation, (c) consumer-side architecture for resilience independent of provider single-point failure (multi-region + multi-cloud + on-premise backup) where consumer regulation or business continuity demands it, (d) exit and portability planning where provider failure would prevent consumer continuity. Document the residual risk where provider capability is below consumer requirement.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.