We use frameworks to increase our productivity, keep us sane, and generally, to make our development process more enjoyable. In most of the chapters throughout this book, we worked with the Express.js MVC framework for Node.js. This framework allows us to organize our code, and it extrapolates out a lot of boilerplate code, freeing up our time to focus on our custom business logic. The same should be said for the front of an application, as well. Any amount of complex code is eventually going to need to be properly organized, and we need to use a standard set of reusable tools to achieve common tasks. Express.js makes our life easy when writing our backend code with Node.js. There are a number of popular frontend frameworks that you can rely on as well.