What is the technique used by apple Demo photographers with the iphone to get such contast and colour in their photos?

I’m just here to learn, any analysis will be greatly appreciated. The iphone Demo shots are always fun and beautiful. They are documentational but also touristy. I am wondering about the technique to create contrast and strong colours indoors and outdoors.

The use of bright clothing, especially colour theory to make the people and surroundings pop, brings the photos a long way already. Despite this, there must be other factors that make sure the photos don’t look as washed out as travel and family photos always end up looking taken on mobile.

The EXIF info shows they don’t use built in flash but I know these are professionals who know how light works. Do they use external flash? Or a diffuser? Some tweaking is also necessary in post but you can tell these are shots made to look natural.