Declare multiple framework services in vercel.json with internal service-to-service bindings that skip the public internet, replacing separate deployments across clouds.
Summary
Atomic deployments keep frontend and backend in sync across previews and production rollbacks. Service bindings eliminate CORS boilerplate and reduce network latency for internal traffic.
Why it matters
Atomic deployments keep frontend and backend in sync across previews and production rollbacks. Service bindings eliminate CORS boilerplate and reduce network latency for internal traffic.
Implementation verdict
Replaces multi-cloud deployment workflows. Requires declaring services in vercel.json with root paths and entrypoints; supports FastAPI, Flask, Express, Hono, Go, Rust zero-config. Ready now—shipped June 30, 2026.
Sources
Dev Signal
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