Whats Klarna’s argument for the data in a customer’s marketing profile being necessary for accounting purposes? You can’t just store data in your accounting system and wipe your hands of GDPR.
Any request for data or information regarding their architecture is rejected on the grounds of 'trade secrets'.
I do know there are various legal requirements to retain certain data for some time (PSD2 for example must be stored for 13 months, I believe), but outside of that, it sounded to me like they tried very hard not to store anything for longer than necessary or without user consent.
I mean, doesn't mean its true, just the impression I got from the training.