{
  "migration_id": "21031930da18",
  "source_system": "Legacy User Service (Java Spring Boot 2.x)",
  "target_system": "New User Service (Node.js + TypeScript)",
  "migration_type": "service",
  "complexity": "critical",
  "estimated_duration_hours": 500,
  "phases": [
    {
      "name": "intercept",
      "description": "Execute intercept phase",
      "duration_hours": 100,
      "dependencies": [],
      "validation_criteria": [
        "Intercept phase completed successfully"
      ],
      "rollback_triggers": [
        "Critical system failure",
        "Data corruption detected",
        "Performance degradation > 50%",
        "Business process failure"
      ],
      "tasks": [
        "Complete intercept activities"
      ],
      "risk_level": "medium",
      "resources_required": [
        "Technical team availability",
        "System access and permissions",
        "Monitoring and alerting systems",
        "Communication channels"
      ]
    },
    {
      "name": "implement",
      "description": "Execute implement phase",
      "duration_hours": 100,
      "dependencies": [
        "intercept"
      ],
      "validation_criteria": [
        "Implement phase completed successfully"
      ],
      "rollback_triggers": [
        "Critical system failure",
        "Data corruption detected",
        "Performance degradation > 50%",
        "Business process failure"
      ],
      "tasks": [
        "Complete implement activities"
      ],
      "risk_level": "medium",
      "resources_required": [
        "Technical team availability",
        "System access and permissions",
        "Monitoring and alerting systems",
        "Communication channels"
      ]
    },
    {
      "name": "redirect",
      "description": "Execute redirect phase",
      "duration_hours": 100,
      "dependencies": [
        "implement"
      ],
      "validation_criteria": [
        "Redirect phase completed successfully"
      ],
      "rollback_triggers": [
        "Critical system failure",
        "Data corruption detected",
        "Performance degradation > 50%",
        "Business process failure"
      ],
      "tasks": [
        "Complete redirect activities"
      ],
      "risk_level": "medium",
      "resources_required": [
        "Technical team availability",
        "System access and permissions",
        "Monitoring and alerting systems",
        "Communication channels"
      ]
    },
    {
      "name": "validate",
      "description": "Execute validate phase",
      "duration_hours": 100,
      "dependencies": [
        "redirect"
      ],
      "validation_criteria": [
        "Validate phase completed successfully"
      ],
      "rollback_triggers": [
        "Critical system failure",
        "Data corruption detected",
        "Performance degradation > 50%",
        "Business process failure"
      ],
      "tasks": [
        "Complete validate activities"
      ],
      "risk_level": "medium",
      "resources_required": [
        "Technical team availability",
        "System access and permissions",
        "Monitoring and alerting systems",
        "Communication channels"
      ]
    },
    {
      "name": "retire",
      "description": "Execute retire phase",
      "duration_hours": 100,
      "dependencies": [
        "validate"
      ],
      "validation_criteria": [
        "Retire phase completed successfully"
      ],
      "rollback_triggers": [
        "Critical system failure",
        "Data corruption detected",
        "Performance degradation > 50%",
        "Business process failure"
      ],
      "tasks": [
        "Complete retire activities"
      ],
      "risk_level": "medium",
      "resources_required": [
        "Technical team availability",
        "System access and permissions",
        "Monitoring and alerting systems",
        "Communication channels"
      ]
    }
  ],
  "risks": [
    {
      "category": "technical",
      "description": "Service compatibility issues",
      "probability": "medium",
      "impact": "high",
      "severity": "high",
      "mitigation": "Implement comprehensive integration testing",
      "owner": "Development Team"
    },
    {
      "category": "technical",
      "description": "Performance degradation",
      "probability": "medium",
      "impact": "medium",
      "severity": "medium",
      "mitigation": "Conduct load testing and performance benchmarking",
      "owner": "DevOps Team"
    },
    {
      "category": "business",
      "description": "Feature parity gaps",
      "probability": "high",
      "impact": "high",
      "severity": "high",
      "mitigation": "Document feature mapping and acceptance criteria",
      "owner": "Product Owner"
    },
    {
      "category": "operational",
      "description": "Monitoring gap during transition",
      "probability": "medium",
      "impact": "medium",
      "severity": "medium",
      "mitigation": "Set up dual monitoring and alerting systems",
      "owner": "SRE Team"
    },
    {
      "category": "business",
      "description": "Zero-downtime requirement increases complexity",
      "probability": "high",
      "impact": "medium",
      "severity": "high",
      "mitigation": "Implement blue-green deployment or rolling update strategy",
      "owner": "DevOps Team"
    },
    {
      "category": "compliance",
      "description": "Regulatory compliance requirements",
      "probability": "medium",
      "impact": "high",
      "severity": "high",
      "mitigation": "Ensure all compliance checks are integrated into migration process",
      "owner": "Compliance Team"
    }
  ],
  "success_criteria": [
    "All data successfully migrated with 100% integrity",
    "System performance meets or exceeds baseline",
    "All business processes functioning normally",
    "No critical security vulnerabilities introduced",
    "Stakeholder acceptance criteria met",
    "Documentation and runbooks updated"
  ],
  "rollback_plan": {
    "rollback_phases": [
      {
        "phase": "retire",
        "rollback_actions": [
          "Revert retire changes",
          "Restore pre-retire state",
          "Validate retire rollback success"
        ],
        "validation_criteria": [
          "System restored to pre-retire state",
          "All retire changes successfully reverted",
          "System functionality confirmed"
        ],
        "estimated_time_minutes": 1500
      },
      {
        "phase": "validate",
        "rollback_actions": [
          "Revert validate changes",
          "Restore pre-validate state",
          "Validate validate rollback success"
        ],
        "validation_criteria": [
          "System restored to pre-validate state",
          "All validate changes successfully reverted",
          "System functionality confirmed"
        ],
        "estimated_time_minutes": 1500
      },
      {
        "phase": "redirect",
        "rollback_actions": [
          "Revert redirect changes",
          "Restore pre-redirect state",
          "Validate redirect rollback success"
        ],
        "validation_criteria": [
          "System restored to pre-redirect state",
          "All redirect changes successfully reverted",
          "System functionality confirmed"
        ],
        "estimated_time_minutes": 1500
      },
      {
        "phase": "implement",
        "rollback_actions": [
          "Revert implement changes",
          "Restore pre-implement state",
          "Validate implement rollback success"
        ],
        "validation_criteria": [
          "System restored to pre-implement state",
          "All implement changes successfully reverted",
          "System functionality confirmed"
        ],
        "estimated_time_minutes": 1500
      },
      {
        "phase": "intercept",
        "rollback_actions": [
          "Revert intercept changes",
          "Restore pre-intercept state",
          "Validate intercept rollback success"
        ],
        "validation_criteria": [
          "System restored to pre-intercept state",
          "All intercept changes successfully reverted",
          "System functionality confirmed"
        ],
        "estimated_time_minutes": 1500
      }
    ],
    "rollback_triggers": [
      "Critical system failure",
      "Data corruption detected",
      "Migration timeline exceeded by > 50%",
      "Business-critical functionality unavailable",
      "Security breach detected",
      "Stakeholder decision to abort"
    ],
    "rollback_decision_matrix": {
      "low_severity": "Continue with monitoring",
      "medium_severity": "Assess and decide within 15 minutes",
      "high_severity": "Immediate rollback initiation",
      "critical_severity": "Emergency rollback - all hands"
    },
    "rollback_contacts": [
      "Migration Lead",
      "Technical Lead",
      "Business Owner",
      "On-call Engineer"
    ]
  },
  "stakeholders": [
    "Business Owner",
    "Technical Lead",
    "DevOps Team",
    "QA Team",
    "Security Team",
    "End Users"
  ],
  "created_at": "2026-02-16T13:47:34.565896"
}