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Azure Functions Hosting Options

⚡ Azure Functions is a serverless computing service that enables you to run event-driven code without managing infrastructure. It offers various hosting plans, each designed for different workloads. All plans support auto-scaling, but they differ in scaling limits, pricing💰, and features🛠️.

  • ❤️ Flex Consumption Plan: Supports up to 1000 instances and always-ready instances⚡.

    • Linux (code-only). Windows not supported.
    • ✅ VNet integration.

  • 💛 Consumption Plan: Supports up to 200 instances but may experience cold starts.

    • Linux (code-only)/ Windows (code-only).
    • ❌ No VNet integration.

  • 💜 Premium Plan: Supports up to 100 instances and always-ready instances⚡.

    • Linux (code & container). Windows (code-only).
    • ✅ VNet integration.

  • 🩵 Dedicated Plan: Supports up to 10-30 instances and always-on functionality⚡.

    • Linux (code & container). Windows (code-only).
    • ✅ VNet integration.

  • 🧡 Container Apps: Supports up to 1000 instances and avoids cold starts if replicas ≥ 1⚡.

    • Linux (container-only). Windows not supported.
    • ✅ VNet integration.

For more details, check the official documentation 👉 Azure Functions scale and hosting | Microsoft Learn