Technology Business Management (TBM) is a strategic framework designed to maximize the business value of IT spending by treating IT as a business rather than a mere cost center, emphasizing decision-making based on business needs like reliability and customer satisfaction. Developed by the Technology Business Management Council, TBM provides a taxonomy that aligns finance, IT, and business leaders through a common language to guide discussions and optimize IT services to meet business goals. The framework involves ten core tenets, such as creating transparency, continuous improvement, and aligning IT with business strategies, which are crucial for effectively managing technology resources and financial investments. Chaos Engineering complements TBM by enhancing system reliability and customer satisfaction through proactive testing and incident management, allowing organizations to optimize spending and save money while maintaining operational goals. As part of a TBM initiative, Chaos Engineering helps find hidden risks, ensuring systems are resilient and capable of supporting revenue generation by meeting customer demands efficiently.