Do I need separate hosting for headless?

Yes, the frontend lives separately:

• Vercel, $20/month Pro tier covers most stores. Best DX. Edge runtime + automatic SSG.
• Netlify, Similar pricing. Good if you want Netlify Functions for edge resolvers.
• Self-host Node, If you have an internal ops team. Add ~$50, $200/month per region for the Node app + CDN.

Your Magento backend stays where it is. No changes needed. Magento becomes a GraphQL API + admin panel + checkout endpoint, nothing else changes server-side. We can warm-up edge caches and pre-render top-200 pages so your origin server load actually drops after going headless.