Luton boss Rob Edwards said:
"It's a really good win, a really difficult game.
"Sabri is new in and it's always difficult to go up against a new manager, a really experienced coach, good coach, who had a bit of time to get to work with them as well.
"It was going to be really hard to break them down, we knew that.
"We did create chances and half-chances and almost moments, lots of crosses, and then missed a penalty. You start to think maybe it's not our night, but I'm delighted for Eli."
Cardiff boss Sabri Lamouchi said:
"We tried to put one plan. We didn't start very, very well, I saw the team losing a lot of simple things - control, passes, duels as well in the beginning, and even at the end.
"I don't know if we deserved even this result because the team (fought) right until the end, but in the small details we were not there.
"I don't want to say we controlled Luton, but we disturbed Luton.
"Unfortunately, offensively we didn't believe we can do better, so step by step, we will try to do it."