[Hikikomori]

There was a Klarna cloud yes. At the time it was unclear if finance/banks could utilise public cloud services (regulatory requirements), so it made sense in that way, but creating your own cloud is something few orgs are capable of.

[AtNightWeCode]

It is not that uncommon among finance tech companies in Sweden to have some in house cloud. They often already have the knowledge to run servers with virtualization, logging, backups, redundancy and so on. Adding a service layer to that by using Kubernetes for instance is doable.