To give a very narrow answer, I had silicone render done on the gable end wall of my previous house and it was fantastic. 100% recommended.
SW facing, loads of driving rain (high up in Sheffield), it didn’t have a crack or a mark on it after three years. Then I moved.
It was an expensive pro install, I can’t imagine DIY would be very successful for anything but the smallest area given I think it has such a nice finish partly because it gets sprayed on.