The CentOS Project , as long as I can remember, wouldn't have been possible without help of various sponsors over the years.
Most sponsors listed on https://www.centos.org/sponsors sponsored one or more machines hosted in various datacenters over the globe, but some had a huge impact over the content delivery. Some years ago, Packet.net (now Equinix.com) reached out to see how they'd be able to help us at the infra/network/bandwidth level and we agreed to use 4 machines in our mirror.centos.org (and from now on mirror.stream.centos.org pool) machines pool, itself seeding/feeding the whole external mirrors network
I recently had a look at the collected stats/metrics from our zabbix monitoring solution and here is an interesting graph about these 4 machines (two in the USA - one on the east-coast and other on west-coast, one in Europe/Germany and last one in Asia/Japan) :
From that graph (from the last 30 days) it's easy to guess when there is a new CentOS Stream compose going out (still happening for Stream 8 and Stream 9 when we'll publish this blog post), and also still CentOS 7 updates.
That's without counting the various Special Interest Groups (SIGs) repositories which are maintained by community (and for the community).
Thanks a lot Equinix for sponsoring these machines that really help getting new packages for the distributions but also SIGs content being delivered in a timely fashion to all our users