Azure Functions for .NET

Azure Functions for .NET

Trigger On

• working on Azure Functions in .NET
• migrating from the in-process model to the isolated worker model
• adding Durable Functions, bindings, or host configuration

Documentation

• Guide for running C# Azure Functions in an isolated worker process
• Differences between in-process and isolated worker process
• Migrate C# app from in-process to isolated worker model
• Durable Functions overview
• Durable Functions best practices and diagnostic tools

References

• Patterns - Isolated worker patterns, Durable Functions patterns, advanced binding patterns
• Anti-Patterns - Common Azure Functions mistakes and how to avoid them

Workflow

1. Use isolated worker model for all new work:

   • In-process model reaches end of support on November 10, 2026
   • Runtime v1.x ends support on September 14, 2026
   • Target .NET 8+ for longest support window

2. Detect current project shape:

   • Target framework and runtime version
   • Worker model (isolated vs in-process)
   • Binding packages and host configuration

3. Use standard .NET patterns in isolated model:

   • Normal dependency injection
   • Middleware pipeline
   • IOptions<T> for configuration
   • ILogger<T> for logging

4. For Durable Functions: