Throughout this chapter, we have learned about middleware and how to implement and use middleware within the Echo framework. Middleware serves as a means to minimize duplication within your handler code by abstracting common functionality out of the handlers. By using middleware, your code will become more streamlined and easier to maintain as changes can be made without touching every handler within your web application. This means that your web application can remain ignorant to the functionality that the middleware provides.  This chapter also outlines a variety of middleware functions that come with the Echo framework that have been contributed to by the community.

The next chapter will dive into details mentioned within this chapter of request data binding. We will also cover the echo.Context primitive, which allows us to pass application context from the Echo framework through middleware functionality, all the way to the end handler code.