You've now used Azure Application Gateway to encrypt and help secure your network traffic between users and your web application. You enabled SSL encryption between users and Application Gateway to encrypt traffic over the internet.
You also enabled SSL encryption for traffic between Application Gateway and your web services. This encryption ensures that the web services are valid to communicate with. You can now use the skills you've learned in your own environment to help secure HTTP traffic.
To learn more about Azure Application Gateway, see the following articles: