CMS
Shopify Hydrogen: Oxygen, RSC, not a theme app embed
· Configuration notes, not a newsroom.
SiteRune fingerprints Hydrogen / Oxygen. We will not tell you to install a Online Store theme app. Headers and cache follow the host — often Oxygen, not always Vercel.
Different runtime than Online Store
Hydrogen is a storefront framework. The Shopify playbook that says 'defer app embeds' does not apply the same way. TTFB is your RSC/loaders and the CDN in front of Oxygen. Product JSON-LD is still your job in the template.
Do not assume Vercel
Oxygen is Shopify's host. We mention vercel.json only when Vercel headers are on the response. Security headers: the Hydrogen/Oxygen header API or a CDN in front. Checkout remains Shopify-hosted — we skip it.
Run it on a live URL
The brief will name your CMS and attach the files. Three guest scans, no card.