I have a technical question about thermal management with mid-power LED diodes like Samsung LM301H.

Do you use thermal vias on the PC board anymore? Either under the LED diode footprint or even around the footprint?

I was reading about this on a ten year old application note from Cree called "Optimizing PCB Thermal Performance for XLamp® XQ & XH Family LEDs"

Is this still a thing they do?