Sending here just as a FYI : https://composes.centos.org is being decommissioned today. It was used some time ago for the Stream 8 (EOL itself in May 2024) but doesn't serve any purpose anymore. (https://redhat.atlassian.net/browse/CS-3332)
Just to note that it doesn't concern the one that is still used for staged releases for CentOS Stream 9 , 10 (and upcoming 11) , which are available under https://composes.stream.centos.org, and that CDN will continue to be used to access staged content for these releases.
So nobody should see any impact with the composes.centos.org decommission phase, as nobody should be using it anyway (old and unsecure content), so just sending this as a FYI