We recently implemented custom domain support in Inquir Compute, and it feels like one of those features that really changes a platform from works technically to ready for production.

For me, custom domains are a core part of production-grade infrastructure. They are not just cosmetic they affect branding, trust, onboarding, and the overall developer experience.

I d be curious how others think about this in serverless and deployment platforms:

• At what point do you consider custom domains a must-have?

• What parts are usually the hardest in practice: DNS flow, TLS issuance, routing, verification, or UX?

• Do you prefer keeping platform subdomains as the canonical entry point, or treating custom domains as the primary one?