Since the modern Olympic Games were reorganized in 1896, the event of lighting the Olympic cauldron using a torch has been performed. Every year the host country will perform an interesting friend flame gimmick. In the 1992 Barcelona Olympics for example, the crater was ignited using an arrow shot from a distance. This year the Paris Olympics made a difference as it was the first to not have a cauldron lit by fire.
Instead, the crater is equipped with LED lights and water vapor jets that make it look like it's on fire. This is because Paris wants to be the most sustainable Olympic event ever organized with the target of emitting only 1.5 million tons of carbon dioxide compared to 3.5 million tons of carbon dioxide by the Tokyo Olympics. Another unique thing is that this crater will fly into the sky using a balloon every time the sun sets before returning to earth at 2 am.
The Olympic flame that was brought from Athens and carried by Zinadine Zidane during the opening ceremony is still burning but it is kept somewhere else. In addition to not having an Olympic fire, Paris also does not provide air conditioning in the athletes' village, forcing the United States to bring its own. Before the start of the event there were reports of Thai athletes complaining that the bus that took them was so hot that it caused them to sweat