Troubleshooting Website Performance Issues

You have finally deployed the website you have been working on. It worked great in test, but in the real world it is running slower than expected. It is now your responsibility to find out why. We are going to take an example underperforming site, locate the performance issues, and solve them. This won't solve all of your problems, but you will learn some tools to help you in the future.
This is a presentation that was originally given at the South Florida Developers Conference on Feb 29, 2020.