Hi Philippe,
Website and configurator are still really in Beta/version 0.5 . Have a meeting with the team to review a 65 page PDF of notes I just made after launch full of comments and UI tweaks… will be constantly rolling out improvements and already looking at version 1.0 to launch once we have product shipping.
Configurator and site was totally custom and the rendering is based on the Unreal game engine I believe. Back end is Shopify.
R