The FAI chief has emphasised that the Italian tactician's objective is to steer the Boys in Green to the World Cup in Brazil
The Boys in Green remain in contention to qualify for the 2014 World Cup in Brazil, but a draw against Austria and heavy home defeat to Germany means that Trapattoni's team are currently placed fourth in Group C, level on points with Sweden and Austria and battling for a playoff spot.
"We don't employ an experienced manager like Giovanni Trapattoni to not qualify," Delaney told the Irish Daily Mirror. "That's his objective. That's why we employed him back in 2008."
"We were very unlucky, as everybody knows, in the play-off (for the 2010 World Cup) against France in 2009, but we did qualify for Euro 2012 and it's important that we qualify this time round to get to Brazil."
He continued: "We've made it difficult for ourselves with the draw at home to Austria, although we were fortunate to win away to Kazakhstan. I think we have to remind people of that.
"But it is important to qualify. That's our objective, it's why we're in football. It looks like the play-offs route will be needed to get to the World Cup."
Italian tactician Trapattoni was almost relieved of his duties as Ireland manager after steering the team to its heaviest home defeat - a 6-1 loss to Germany in October 2012.
However, Delaney revealed that the board of the association "took a considered and quick approach" conscious of the fact that "one bad result doesn't make a bad manager".
"If the truth be told, Giovanni got a lot of stick after the Germany result," added the FAI chief executive. "One bad result doesn't make a bad manager. Nor does one good result make you great either.
"Football has taught me one thing in terms of experience – in the job I have, you can't react to just one result. "The (FAI) board took a considered and quick approach and we backed him.
"Yes, there were things (Trapattoni) had to do, like go to more games, which he has done. Yes, there were younger players that needed to come in. And that's the case with the current panel of players.
"It's now all about September," concluded Delaney.
The Republic of Ireland will take on Wales in an international friendly in August before resuming their World Cup qualification campaign at home to Sweden in September.