In the ever-evolving landscape of digital applications, ensuring uninterrupted performance and reliability is crucial. Application resiliency involves implementing strategies to boost an application's adaptability to diverse challenges, enhancing user experience and revenue. The benefits include enhanced reliability and availability, improved user satisfaction, protection against revenue loss during downtime, and adaptability to evolving conditions. A comprehensive approach covering various aspects of digital infrastructure is necessary for ensuring seamless performance and modernization. Key components of resiliency include fault tolerance, redundancy, and scalability, which can be achieved through design principles such as microservices architecture and cloud-native development. The application resiliency checklist covers preparing for failures, redundancy strategies, scaling approaches, and recovery plans. Regular testing and iteration are essential practices to strengthen an application's resilience, involving stress and load testing, learning from failures, and continuous improvement. By leveraging advanced performance monitoring capabilities, organizations can monitor, troubleshoot, and optimize application performance, gaining deep insights into their application's behavior and identifying potential points of failure.