DORA scenario testing with AWS Fault Injection Service

This article discusses using AWS Fault Injection Service (FIS) to support Digital Operational Resilience Act (DORA) scenario testing for financial services organizations. The authors outline a comprehensive approach to chaos engineering for improving system resilience.

• DORA requires financial entities to perform digital operational resilience testing
• Chaos engineering helps uncover unknown system weaknesses beyond traditional testing
• A 5-stage iterative approach is recommended for failure scenario testing:
  • Identify failure scenarios
  • Plan failure testing
  • Execute failure scenarios
  • Report on scenario testing
  • Remediate resilience issues
• AWS Fault Injection Service (FIS) provides tools to conduct controlled failure experiments
• Testing should start small, be gradual, and focus on critical system functionalities

The goal is to systematically identify and address resilience gaps in systems supporting critical financial functions, providing empirical evidence for DORA compliance.