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| Metric | Cloudflare Workers | Metal | Azure Functions |
|---|---|---|---|
| Score | B+75 | B74 | C56 |
| Type | Edge | Serverless | |
| Execution | jit | aot | hybrid |
| Interface | platform | sdk | platform |
| Cold Start | <1ms | 50ms | 800ms |
| Memory | 128MB | 100MB | 128MB |
| Startup | <1ms | 20ms | 100ms |
| Isolation | process | hardware | container |
| Maturity | production | production | production |
| Languages | JavaScript, TypeScript, Rust, C, C++ | Swift, Objective-C, C++ | JavaScript, TypeScript, Python, Java, C#, PowerShell, Go |
| License | Proprietary | Proprietary | MIT |
| Links |