AIDA (Aeronautical Information Data-handling-system Austria)/Integrated Briefing System (IBS) Legacy System (technology end of life as well as software architecture) replaced, “EAD customized” (EAD - European Aeronautical Database) implemented, Connection to existing Austro Control infrastructure (network, working positions, ECITs - EAD Connection Interface Terminal, BF (Briefing Facility)-Box, IBS Web services etc.) ensured, Data from legacy system transferred,AIDA/IBS legacy system cut out and sub-provider contracts cancelled, OPS (operations) training (AIM/VFSS) and briefing of technical personnel (ACG Service Control Center and experts) conducted, Nagios and Trouble Ticket System inserted,“EAD customized“ set in operation after successful FAT and SAT.