Sample ASP.NET Core Application for performance testing
Fresh out the box .net 6 MVC site deployed to azure with just a logo.
— Jim (@GolfJimB) November 13, 2021
Google Lighthouse: 8/10 for speed.
Literally just rendering bootstrap, thoughts @shanselman? pic.twitter.com/8FGQ7ZNnVy
There are several steps that depend on your content and testing environment. If you are hosting on Azure, you need to enable HTTP2. If you are testing locally, HTTP2 is probably already running.
You might also have to enable HTTPS with an SSL certificate. All the major cloud providers have mechanisms for free certs. You might also try free certs from Let's Encrypt.
If you are hosting on IIS, take a look at Certify the Web. It's a great GUI tool and not very expensive for production.