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| Metric | Bun | Cloudflare Workers | Azure Functions |
|---|---|---|---|
| Score | B+76 | B+75 | C56 |
| Type | Language | Edge | Serverless |
| Execution | jit | jit | hybrid |
| Interface | cli | platform | platform |
| Cold Start | 3ms | <1ms | 800ms |
| Memory | 25MB | 128MB | 128MB |
| Startup | 1ms | <1ms | 100ms |
| Isolation | process | process | container |
| Maturity | stable | production | production |
| Languages | JavaScript, TypeScript, JSX, TSX | JavaScript, TypeScript, Rust, C, C++ | JavaScript, TypeScript, Python, Java, C#, PowerShell, Go |
| License | MIT | Proprietary | MIT |
| Links |