Redundancy and diversity are not the same thing.
This episode covers dependency mapping, controlled failover, meaningful alternate paths, partial failures, common-mode risks, cybersecurity interactions, restoration, failback, and operational evidence.
https://fletch.tv/wp-content/uploads/2026/08/TiPS_E260902_WED_Diversity-And-Failover-Test.xlsx
## CISA/NCSWIC - Leveraging the PACE Plan into the Emergency Communications Ecosystem
https://www.cisa.gov/sites/default/files/2024-10/2024_NCSWICPTE_Leveraging_PACE_Plan_Emergency_Comms_Ecosystems.pdf
Explains Primary, Alternate, Contingency, and Emergency communications and stresses that backup methods must be feasible, suitable, distinguishable, and practiced.
## CISA/SAFECOM - Interoperability Continuum
https://www.cisa.gov/sites/default/files/publications/23_0103_safecom_Interoperability_Continuum_2020_508C.pdf
Connects governance, SOPs, technology, training and exercises, usage, security, and continuity of operations.
## CISA - Emergency Communications System Lifecycle Planning Guide Compendium
https://www.cisa.gov/sites/default/files/publications/2018_Emergency_Communications_System_Planning_Guide_Compendium_FINAL_508_08092018.pdf
Places formal testing and acceptance within implementation, recommends resolving deficiencies before final acceptance, and connects procedures and training to system rollout.
## NIST SP 800-34 Rev. 1 - Contingency Planning Guide for Federal Information Systems
https://csrc.nist.gov/pubs/sp/800/34/r1/upd1/final
Provides a structured approach for contingency requirements, recovery strategies, plan testing, training, exercises, maintenance, and recovery of information systems and operations.
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