Various types of ski bindings will be compatible with different types of ski boots, so you’ll need to read up on the brand’s description of the ski bindings to find out what types of ski boots they’ll work with. However, many ski bindings now come with dual compatibility options that can help you with traditional downhill ski boots as well as AT boots.
When you’re searching for the compatibility options on your ski bindings, you’ll see reference to ISO 9523 standards or Walk to Ride (WTR) type boots. Some boots are made with taller, rocker type soles which traditionally didn’t fit or release well from downhill ski bindings. However, most brands nowadays are tech savvy enough to make their bindings compatible with a wide range of boots, with dual compatibility boot features.