ISO/IEC 27002:2022 control 5.30 applies, with telecommunications guidance: plan for services to degrade gracefully, putting emergency services first and scaling back or halting the least critical services first, following an order of priority. Business continuity planning should cover keeping telecommunications services available, and the organization should consider adding a disaster recovery plan covering its telecommunications services and securing customers' essential communications, and should also think about when staff are to be sent out to operating areas for disaster recovery.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.