CS0-004: CompTIA Cybersecurity Analyst (CySA+)Demo

The lessons learned phase (also called post-incident review or post-mortem) is the standard step in the incident response lifecycle where the response team evaluates the actions taken during the incident to identify what worked well, what didn't, and what corrective actions or process improvements should be implemented going forward. This is distinct from root cause analysis, which focuses on identifying the technical cause of the incident itself, and from KPIs/metrics or executive summaries, which serve measurement and reporting purposes rather than process improvement review. NIST SP 800-61 formally defines this as the 'Post-Incident Activity' phase, commonly referred to as the lessons learned meeting.