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Azure Functions Practical Guide

Production-focused documentation for operators and engineers — from first deployment to incident response.

Unlike introductory tutorials, this guide emphasizes what happens after your functions go live: troubleshooting real incidents, hypothesis-driven debugging with KQL, runbooks for common failures, and battle-tested operational patterns.

  • Investigating an Incident?

    Jump straight to hypothesis-driven playbooks with real KQL queries, evidence patterns, and hands-on lab exercises.

    Troubleshooting

  • Running Production Workloads?

    Apply battle-tested patterns for hosting selection, scaling, reliability, networking, and deployment safety.

    Best Practices

  • New to Azure Functions?

    Start with platform fundamentals, choose a hosting plan, and deploy your first function app.

    Start Here

What Makes This Guide Different

This Guide Typical Tutorials
Troubleshooting playbooks with falsifiable hypotheses "It works" happy-path only
KQL query library for real investigation No observability guidance
Hands-on lab guides reproducing actual failures No failure scenarios
Operations runbooks for day-2 tasks Setup-only documentation
4 languages × 4 hosting plans with tested CLI Single language/plan examples
Section Purpose
Start Here Orientation, learning paths, hosting plan selection, and repository map.
Platform Understand core Azure Functions architecture, hosting, scaling, networking, and security.
Best Practices Apply production patterns for hosting selection, triggers, scaling, reliability, and deployment.
Language Guides Follow end-to-end implementation tracks for Python, Node.js, Java, and .NET.
Operations Run production workloads with deployment, monitoring, alerting, and recovery practices.
Troubleshooting Diagnose trigger, scaling, dependency, and deployment issues quickly.
Reference Use quick lookups for CLI, host.json, environment variables, and platform limits.

For orientation and study order, start with Start Here.

Learning flow

flowchart TD
    A[Start Here] --> B[Platform]
    B --> C[Best Practices]
    C --> D[Language Guides]
    D --> E[Operations]
    E --> F[Troubleshooting]
    F --> G[Reference]

Scope and disclaimer

This is an independent community project. Not affiliated with or endorsed by Microsoft.

Primary product reference: Azure Functions documentation (Microsoft Learn)

See Also

Sources