HTML5 is a modern specification which defines a lot of features that we have seen in the previous chapters. One of the biggest problems faced in application development is code management: how you will structure your application so that it will be easily readable, expandable, maintainable, and so on. In this chapter, we will see modern methods or tools of modern application development. Once we come to know about the different techniques, methods, and tools, we will be equipped to enhance our application.