We play basketball backstage during my concerts.

I was taken backstage to meet the actors.

Then, turning to the model, he thanked her profusely and ushered her backstage.

You might use this when you have a background process that is generating output in a file and you want to check in and see how it is doing.

While some technical concepts can be mentioned (and explained), the emphasis should be on the interface, not on the back-end.