Underground, several hundred metres of pipes and cables are laid to provide water, propellant, electricity and data connections to the launch pad.

About five km from the launch pad CNES adapted the “Centre de Lancement 3”, the former Ariane 5 launch control centre, for Ariane 6. This bunker has 1-metre thick walls to protect the people inside. If the Ariane 6 rocket was an aircraft, this would be the cockpit, the people behind these computers are the ones that monitor the rocket and can send commands to the launcher during the countdown to launch. Underneath them is a server, called the control bench, that processes over 20 000 data points each second to report on the health of the rocket and the launch pad. It is the brain of the whole system interpreting sensor information on temperatures, valves, pressure, pyrotechnics, propellant systems and more.