The Angular team has released a small tool called Zone that is less than 200 lines of code but will revolutionize how you use JavaScript. A zone is an execution context for asynchronous JavaScript that provides local storage and allows you to hook into various events. Imagine being able to debug a call stack that doesn't end at the click handler but goes all the way back to the code that wired in the handler. Imagine being able to instrument asynchronous calls without changing a line of your existing code but with the ability to see the performance in a continuous line of active and elapsed time from the initial request. Zone can run with any JavaScript library and does not require Angular but can enhance the way you integrate third-party components with Angular. Witness for yourself the power of this library through live examples.