Performance Optimization and Error Handling focus on improving system efficiency while ensuring applications and data workflows run reliably. Performance optimization involves identifying bottlenecks and improving speed, resource usage, and scalability across systems. Error handling ensures that failures are detected, managed, and resolved without disrupting overall operations. This training explains techniques such as query optimization, caching, parallel processing, and resource tuning. It also covers logging, exception handling, retry mechanisms, and fault tolerance strategies for robust system design. You will learn how to build high-performing and resilient applications that maintain stability under load. The course also highlights best practices for monitoring, debugging, and maintaining enterprise-grade systems.