EU VAT numbers are one of the things you don't want wrong in the CRM.
The VIES integration checks EU VAT numbers against the EU's official register and pulls the registered company name and address. Always on, no setup.
When you work across borders in Europe, that means company data is correct from the first touch. You don't have to hunt for the official name or the legal address. It's already there.
It's not a big part of the conversation. But it's the kind of thing that otherwise costs you twenty minutes when you spot the mistake three weeks later, mid-invoicing.
Norwegian company numbers come from Brønnøysundregistrene. EU VAT numbers come from VIES. Both automatic, both in the background.