Multilingual application of information technology.?

Question

means using more than one programming languages to crate a s/w or a program....
but how to explain it what can be written about it in the contents of 1/2 pages....
means actually the question means that
"what do you mean by multilingual app. of IT, which r the uses of that n adv & disadv of it?"

Answer 1

Then what ?????

Answer 2

there's no advanteges..only posible troubles...