How to Migrate Existing Azure Functions to the .NET 8 Isolated Worker Runtime

This article walks through upgrading an existing Azure Functions project to the .NET 8 isolated worker model. It covers updating the project file, configuring host.json, replacing FunctionStartup with a Program.cs entry point, setting FUNCTIONS_WORKER_RUNTIME to dotnet-isolated, and correctly building, running, and attaching the debugger. By following these steps, you gain better performance, maintainability, and a smoother debugging experience for your serverless .NET workloads.