This is a request for information (RFI). Danish Defense Acquisition and Logistics Organization (DALO) plans to tender a contract regarding acquisition and sustainment of a new VTS system. As part of the preparation to the tender, DALO would like to request information regarding some specific topics from potential tenderers. Due to this DALO has decided to initiate a technical dialogue with the market. The purpose of this technical dialogue is to obtain information about the possibilities and restrictions on the market and to understand how the best possible tender can be arranged both for DALO and the tenderers according to the EU regulation.