[andix]

> On .NET 9, I just now did `dotnet new webapi` followed by `dotnet publish --self-contained -p:PublishSingleFile=true` and the binary is 103MB.

I've just tried the same, but with native-aot (build to native code). On Windows it was around 10mb, including routing, JSON serialization and openapi support. Startup is nearly instant.

If you include the dotnet runtime it's much bigger, but that's expected.

Edit: built with dotnet publish -r win-x64 -c Release /p:PublishAot=true /p:PublishTrimmed=true /p:PublishSingleFile=true