Hello Paul,
thanks for your information.
So I take it from your answer that not much more needs to be done when converting the database - that's fine!
The few technical points are interesting - unfortunately I don't have PHP 8.3 available, my provider stops at 8.2.
Gzip is activated by default - I didn't know that myself before, but of course the provider releases his systems and I have set up redis, but it doesn't really do anything for me - I'll have a look at the .htaccess entries - thanks for that.
Regards - Marco