Buy DAP A commercial license for one server is US$1300. The license lasts forever. One license is required per Domino server regardless of the number of CPU cores. So one Domino server - one license - simple. A license include all future DAP upgrades, just keep your licensed license file and update the rest. You can pay with one of the major credit cards or Paypal. After payment is received your new license files will be sent to the e-mail address specified when ordering together with a PDF invoice of the transaction. For outside and inside of EU the VAT is not needed but for Swedish orders the VAT is 25%.