The Arsenal striker notched two goals within the opening 30 minutes as les Blues geared up for their final Group I World Cup qualifying game against Finland on Tuesday in style.
Giroud is in fine form for club and country, with eight goals in 15 outings, but was keen to congratulate the other members of the France squad as they subjected Australia to a second consecutive six-goal loss, resulting in the dismissal of manager Holger Osieck.
"The first goal, I try it sometimes and if it does not work people say it's because I have not played well, but when it comes off, it come off," Giroud told L'Equipe. "The second goal was a beautiful team movement. I hope to see more of that in the future.
"To assess a striker, he must perform on the big occasions. Tonight, I was provided with many chances so I could perform. To score goals, the France team needs several good strikers. We are fortunate to have two strikers who complement different tactics. I am very happy for me, but also for Karim [Benzema] who scored. It's good for us to score, but also for les Bleus."