Premium domains differ from standard registrations not just in price, but in technical and business implications. Registry-level premium domains are priced higher based on factors like length, memorability, and commercial intent. While DNS resolution is identical for both types, premium domains offer practical advantages: simpler renewal structures reduce long-term costs, shorter names improve email deliverability and reduce typos, cleaner URLs enhance developer experience in logs and documentation, and memorable domains improve user behavior metrics that indirectly affect SEO. Premium domains make sense when the domain itself is central to product access and comprehension, functioning as infrastructure rather than just marketing. The key consideration is whether the domain removes friction across the product stack over its lifetime.