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drupalhttp2

What are the steps to switching Drupal website/server to HTTP2

We need to convert our Drupal website to HTTP2. What would the steps be needed to convert the website and server?

Solution
    1. Turn it on in your web server in dev.
    2. Test it to make sure no unintended consequences - nothing should have to change at an app level to use HTTP/2 as the web server and browser takes care of all that for you automatically (one of the many nice things about HTTP/2!), but there can be unintended consequence due to removal of download constraints. See here as an example: https://www.lucidchart.com/techblog/2019/04/10/why-turning-on-http2-was-a-mistake/
    3. Decide if you want to optimise for HTTP/2 (e.g. bundle and sprite less) to get most out of the new protocol.
    4. Turn it on in your web server in prod.
    5. Monitor and measure impact.