Microsoft’s focus for its .Net runtime has aggressively been on performance, enabled in no small part by their embrace of a functional paradigm. ASP.Net Core takes it even further, making the pair a performance powerhouse. It can be easy to miss it because the features have been carefully implemented to support backward compatibility. Understanding how to take advantage of the features, however, not only unlocks a faster programming model but it enables you to write better code. This talk will provide a solid foundation for building high performing code in modern ASP.Net Core apps with real benchmarks and actionable design patterns.