Following significant outages in the UK finance industry, the Bank of England, Prudential Regulation Authority, and Financial Conduct Authority introduced a framework to enhance operational resilience, which any company can adopt to bolster their software systems. The framework involves identifying critical business services, setting acceptable outage tolerance levels, and testing the firm's ability to maintain these levels through realistic scenarios, with management involvement in decision-making and continuous improvement efforts. Chaos Engineering methods are recommended for testing, enabling companies to simulate failure scenarios and identify hidden dependencies in their systems. The proposal emphasizes the importance of involving senior management in setting impact tolerance levels, prioritizing infrastructure improvements, and ensuring robust communication strategies. While initially aimed at UK institutions, the guidelines reflect best practices in the tech industry and offer valuable insights for global companies seeking to improve system resilience.