Now that we understand the key functional challenges, let’s learn about the nonfunctional challenges web application developers face.

In addition to the challenges mentioned so far, web application developers are also required to continuously guarantee high-performing web applications that are always on and available, as well as apps that 100% adhere to complex accessibility requirements. In this lesson, we’ll explore performance and accessibility challenges across web applications.

Performance challenges

For many years, the industry considered a response time of more than three seconds for a web application to load (whether running on a desktop browser or a mobile browser) to cause a customer to move to a different website. Research conducted by Limelight Networks, which was featured in an online documentBroadcom. "It's All About the User Experience." [Online]. Available: https://docs.broadcom.com/doc/its-all-about-the-user-experience. published by Broadcom, shows the different time thresholds and the patience levels of end users today when using web applications. The majority of users will not be willing to wait more than three to five seconds for a website to load. For websites that exceed these thresholds, users will switch to an alternative website

Development challenges

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