ge reports Challenge KPI impact Enterprise/domain Critical incidents analysis factors analysis Organization input Figure 6-11. KPI impact analysis Perform Challenge KPI Impact Analysis: Tools and Techniques Standard Resilience Challenge Reports In most network domains, there are published reports of valid challenges and acceptable strategies of responses for these. Analysis of such reports gives good ideas about which critical KPIs are impacted by the challenges and could contain hints about valid response strategies for these. Critical Incidents Analysis As explained earlier, analysis of critical incidents when the network was subjected to external challenges could also be a valuable tool to determine how the network behaved and to understand the KPIs that were impacted during the events. Perform Challenge KPI Impact Analysis: Output Challenge KPI Impact Analysis The output of challenge KPI impact analysis could be: A table that presents the service levels, challenges that impact the service level, and the KPIs that are impacted under such challenges Optionally, it could also include possible mitigation and prevention strategies Define Resilience Strategy Having defined the levels of service and the impact on KPIs by critical challenges, you are ready to define an actual resilience strategy for the network. This process is illustrated in Figure 6-12. CHAPTER 6 A PROCESS FOR NETWORK ROADMAP EVOLUTION Input Tools and Techniques Resilience management Output Mitigation strategies Defined levels of service Prevention strategies Challenge KPI impact Resilience strategy analysis Critical incidents analysis Enterprise/domain factors Simulation and modeling techniques Organization input Figure 6-12. Resilience strategy Define Resilience Strategy: Tools and Techniques Mitigation Strategies Mitigation strategies include steps that can be taken to recover from the situation or to improve or target a specific level of service including: Acceptable strategies such as redeployment of resources Proactive reduction of service in