e strategy Workshops Resilience strategy Resilience strategy Simulation and modeling updates responses techniques Roadmap update Network KPI reports requests Critical threat reports Figure 6-13. Resilience review strategy Perform Network Resilience Review: Input Resilience Strategy Responses Input as to how the resilience strategy responses actually worked on the network that is deployed is essential for reviewing the resilience strategy itself. Network KPI Reports There should be periodic KPI reports from the network that are deployed with average KPIs, KPI trends, and key KPI variances observed under certain conditions or certain time periods. CHAPTER 6 A PROCESS FOR NETWORK ROADMAP EVOLUTION Critical Threat Reports Although average KPIs and KPI trends are more periodic in nature, critical threat reports could be received anytime during the network operations. These need to be taken as input and then trigger a nonperiod resilience review to assess the impact of the threat in real time and evolve the resilience strategy. This should include: The nature of the threat or challenge The agency or organization that is issuing the report The details on the KPIs impacted and assessment of impact on the network Perform Network Resilience Review: Tools and Techniques KPI Variance Analysis The simplest analysis tool would be to compare expected KPI variance based on the challenge and review this with actual KPI variances observed, SO that: The root cause for the variance could be found Remedial actions based on the variance could be reflected in the resilience strategy and also form the basis for roadmap update requests Simulation and Modeling Techniques As explained earlier, simulation techniques could be used to compare expected behavior with actual behavior and impact of responses and further fine tune the responses and the resilience strategy. Perform Network Resilience Review: Output Resilience Strategy Updates Based on the review, the actual resilience strategy could be updated to include improved resilience mechani