We have come quite far in this book while trying to understand how to build applications for enterprises in Python. The chapters we've covered so far consisted of how to build a scalable and responsive backend for our enterprise application that can cater for a large number of concurrent users, so that our enterprise application is a success with its users. However, there is one topic we have been missing and which usually gets very little attention when building enterprise level applications: the application frontend.

When a user interacts with our application, they are hardly concerned with what is going on in the backend. The experience of the user is directly connected with how the frontend of the application responds to their inputs. This makes the application frontend not only one of the most important aspects of the application, but also makes it one of the major deciding factors for the success of the application among its users.

Throughout this chapter, we will take a look at how we can build application frontends that not only provide an easy to use experience, but also a fast response to their inputs.

While going through this chapter, we will learn about the following topics:

• The need for optimizing the application frontends
• Optimizing the resources your frontend depends upon
• Leveraging the client-side caching to streamline the page loading
• Utilizing web storage for persisting user data