Generally, for tax purposes, it's the address of the customer for cloud services. If they give you a NL address, you tax according to Dutch law. If they give you a DE address, you tax according to German laws, regardless of where services are actually provisioned.
It would not be that difficult to pay EU taxes based on % of revenue attributed to each country. I.e. if you made $1B, and 70% of your revenue came from The Netherlands, and 30% came from Germany, you'd pay Dutch taxes on $700M and German taxes on $300M.
It would not be that difficult to pay EU taxes based on % of revenue attributed to each country. I.e. if you made $1B, and 70% of your revenue came from The Netherlands, and 30% came from Germany, you'd pay Dutch taxes on $700M and German taxes on $300M.