Cloud//Cloudflare//Workers

Cloudflare's edge function runtime. Code executes in V8 isolates (same engine as Chrome), not Node.js. Runs in 300+ datacenters worldwide.

Cloudflare's edge function runtime. Code executes in V8 isolates (same engine as Chrome), not Node.js. Runs in 300+ datacenters worldwide.

Each request gets its own isolate -- startup is ~0ms (no cold start like Lambda)

Limitations: 10ms CPU time (free) or 30s (paid), no filesystem, limited Node.js API compatibility

Supports JavaScript, TypeScript, Rust (via WASM), Python

Workers can access D1, R2, KV, and other Cloudflare services via bindings declared in wrangler.toml