Austria operates one of the EU's most progressive Bitcoin regulatory frameworks (FMA licensing for crypto-services, capital gains tax clarity since 2022). The .at TLD is required for any product marketing into the Austrian Bitcoin market — Vienna hosts 21Bitcoin AT, Bitpanda's HQ, and a growing Bitcoin-financial-services ecosystem. Austria's Bitcoin-per-capita adoption exceeds Germany's despite the smaller absolute market.
Austria is a small market with an unusually high Bitcoin adoption rate and a regulatory climate that has stayed comparatively workable. .at is the only extension that reads as domestic there, and Austrian users notice when a provider serves them from a German domain.
In a DACH rollout .at is rarely the first purchase and almost always a necessary one — it is the cheapest way to stop a lookalike from claiming the local variant of a brand.