I’m willing to bet it’s AWS with 90% certainty - they seem to have very lenient card policies compared to other cloud platforms I’ve worked with. (GCP, on the other hand, won’t even accept debit card - only credit)
> GCP, on the other hand, won’t even accept debit card - only credit
That's not true in my experience: I've been paying my GCP bill with debit cards from three different banks for years. (They were branded as VISA or Mastercard, mind you, but still debit cards.)