You will reach the Airport Center over the motorway A4. It is only a few minutes drive from the exit Dresden Flughafen to the Airport Center. You will reach DERU over the B97 coming from the city centre. Just follow the signs to Dresden Airport. You may determine the fastest route by the route planner.
The suburban train S2 connects Dresden Airport with the stations Dresden main station and Dresden-Neustadt. Trains run every 30 minutes. The station of the S2 train is located in the basement level of the terminal building. From there, it takes you about 5 min to reach the DERU office premises in the Airport Center.