Scope

• The term engineered system is limited to human-made systems containing software, hardware, humans (e.g. socio-technical), infrastructures, concepts, and processes.
• For the purpose of resilience, an adversity is anything that might degrade the capability provided by a system. Achieving resilience requires consideration of all sources and types of adversity; e.g., from environmental sources human, sources, or system failure; from adversarial, friendly, or neutral parties; adversities that are malicious or accidental; adversities that are expected or not. Adversities may be issues, risks, or unknown-unknowns. Adversities may arise from inside or outside the system.
• The fundamental objectives of resilience are avoiding, withstanding, and recovering from adversity.
• The means of achieving these fundamental objectives include Adaptability, Agility, Anticipation, Continuity, Disaggregation, Evolution, Graceful Degradation, Integrity, Preparation, Prevention, Re-architecting, Redeploying,  Robustness, Situational Awareness, Tolerance, Transformation, and other methods.
  
• Resilience focuses on providing required capability - not necessarily with maintaining the architecture or composition of the system.