Airports and computers.
How do airports manage their own and the airlines computer needs? Does every airline have their own, discrete, network or is there a network provided by the airport to which the airlines "subscribe". Do SITA stll operate Common User Terminals and how does that fit into the picture?
I ask because the most recent BA collapse seems to have only affected T5 which has me wondering if something related to BAA may have been involved in the failure.