There are major performance changes in .NET Core and C# 7. This talk will be a guided tour of most important of them. We’ll see how the new tools: ref returns & locals, ArrayPool, ValueTasks and Spans work and what performance benefits they can bring. This talk will discuss how all these new tools can improve your application performance today with the power of .NET Standard. You will also learn how all of these things help build zero-copy streams aka Channels/Pipelines which are going to be a game changer in the nearest future.