Alonso dismissed suggestions Ferrari could have made their own two-stop strategy work as he said, "It's difficult to know if we could have done that. You need to commit to one strategy before the start of the race, and that is the way we had to plan.
"At the end I was sad not to be able to win, but Kimi was fantastic and we need to congratulate them (Lotus) for a fantastic race.
"I think the three stop strategy was the right one with the degradation we had, it would have been impossible to manage on one less and bringing forward the second one by a few laps meant I was able to pass Vettel and Sutil.
"Finishing ahead of the Red Bull tastes like a win, even if we know that despite the race result, they are still the quickest. Now we can expect another weekend with very changeable weather and one that also puts a lot of stress on the cars from a mechanical point of view and on the drivers, from a physical one. But we can tackle it calmly on the back of this good result."
Alonso's partner Felipe Massa missed out on the podium, finishing fourth behind Sebastian Vettel, but claimed it was a good result for him on a circuit that hasn't been too kind to him down the years.
"This is definitely a very positive start to the season, especially because this is a track where I have always suffered," he said.
"We have shown that our car is competitive, with a good race pace and that is down to all the hard work done during winter testing. I had an attacking start to my race, in which I was immediately fighting for the top places.
"Maybe if we had brought forward the second stop, as Fernando did, the podium would have been within my grasp, but I am still very happy with my result. Definitely, we are at a good level, but now we must carefully analyse every smallest detail to try and improve our car."