Does casting a spell from a scroll, wand, etc. trigger arcane ward?

@mikemearls @JeremyECrawford Does casting a spell from a scroll, wand, etc. trigger arcane ward? Can magic item spells be twinned?

— Eric Wykoff (@edge2054) October 28, 2014

Arcane Ward/Twinned Spell works when you cast a qualifying spell. It even works when an item says you cast one. #DnD https://t.co/KU1LXVqJIV

— Jeremy Crawford (@JeremyECrawford) August 27, 2016