Heat Pump Defrost Question

https://deanrfqs563.valoradigest.com/posts/short-cycling-ac-repair-explained-for-north-fort-worth-homes-by-the-comfort-experts-team-2

Heat Pump Defrost Question Is it normal for a heat pump to blow steam from the outdoor unit in winter? Ours did that during the freeze last February and I panicked a bit. Sounds like it might just be the defrost cycle from what I'm reading here