Last week the React team released an experimental version of Concurrent Mode to the public. It's been in development for over a year and the React community has been very excited about its release. What is Concurrent Mode? The documentation pages has a nice and concise description: "Concurrent Mode is a set of new features that help React apps stay responsive and gracefully adjust to the user’s device capabilities and network speed." However if you don't know how Concurrent Mode works or what it actually lets you do you may be left wondering, "Why all the excitement?" If that's you then this blog post is for you.