Assuming you are talking about corporate taxes (not sales tax / VAT). If those were all different companies (one company doing the sales, one company hosting t

Assuming you are talking about corporate taxes (not sales tax / VAT). If those were all different companies (one company doing the sales, one company hosting the infrastructure, one company developing the system, etc.) doing arm's length transaction it would be much simpler, each company would pay local tax in its own profit.