Often we take advantage of just how much is happening behind the scenes to deliver lightning fast responses. Let's look at what causes app performance issues.

Fettblog is a blog by Stefan Judis, offering articles, tutorials, and insights on web development, JavaScript, and performance optimization. Developers can learn about web development best practices, modern JavaScript features, and web performance optimization techniques to create fast and accessible web experiences.

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DZone 8 Ways to Improve Application Performance Application performance is critical for delivering a fast and responsive user experience. Latency can not only impact the overall user experience and decrease engagement, but it can be a costly and complicated problem as well. Slow applications can slow down business processes, leading to decreased productivity and increased costs.

8 Ways to Improve Application Performance

What Causes Application Latency or Performance Issues?

I like the article, but I missed information about performing (preferably in conjunction with CI/CD) performance tests

Good article ! You can also use Next13.Js to get a good app performance.
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You can follow this :
<a href="https://www.youtube.com/watch?v=3WCIyNOrzwM&amp;t=80s" target="_blank" rel="noopener nofollow">https://www.youtube.com/watch?v=3WCIyNOrzwM&amp;t=80s</a>
</blockquote>
Thanks to @javascriptmastery for this amazing tutorial!