Open Telekom Cloud has at least a great part of the functionality you expect when talking about a cloud provider: VMs (even GPU ones), VPCs, managed databases, block storage, Logging, IAM, API Gateway, Container Engine etc. https://www.open-telekom-cloud.com/
Deutsche Telekom used Huaweis OpenStack implementation.
I haven't found any information that this changed, so I assume it is still running completely on Huawei. At least they made sure that they still get chips from the US despite sanctions. ;-)
Telcos fell in love with OpenStack some years ago and went all in.
Biggest problem with OpenStack was you needed a lot of hardware to learn how to use it and the talent pool was quite small.
We are using that for one of our customers that insisted on using it. It works but it's expensive and a lot of their managed solutions are a bit outdated. Last time I checked they still offered Elasticsearch on a version pre licensing change that is definitely no longer supported. Their support and documentation are a bit of a mess as well. I got stuck a few times on things that just weren't working where you had to do some non intuitive thing to get things going again. My strategy with them is to keep things simple and not let them manage anything I care about. So, I run my own Elasticsearch cluster there.
Basically it's just Openstack with some customizations. The rest of our customers run on gcloud. I'm currently eyeing Hetzner as I want to lower our hosting cost.
But the point of Openstack is that it's generally fine and that the feature set it offers is a commodity. AWS definitely overcharges for this stuff. If you do the math, most of their vms will cost you the hardware it runs on within months typically. Amazon runs this hardware for many years. In some cases they host multiple vms on them. Their margin on this stuff is huge. That's why they are so rich. You pay for the convenience and the uptime of course. But undercutting their pricing profitably isn't that hard.
That's only on paper though. I know a couple of people who founded a startup in the medicine sector on Telekom Cloud and most of their backend engineering work in the first years(!) went into circumventing Telekom Cloud issues like slow API, servers not starting or plainly disappearing.
Haven't talked to the guys for two years, so it might have improved in the meantime, but it's Telekom, so I heavily doubt it.
