The A-CDM Concept Element ‘Information Sharing’ is the foundation of the A-CDM procedure. It enables the sharing of information and hence the creation of a common situational awareness. Information Sharing also enhances the decision making process, because it allows all partners to act on the shared information. Thus actions can be taken to optimize airside processes as well as the allocation of recourses (infrastructure, equipment, or staff). Information sharing has also a network effect. This leads to a better management of the airspace capacity by ATC and Network Manager.