azure application settings - how to add nested item

As per this article, you would have to use syntax something like "CustomSettings__MySpecificSetting".

Hope this helps!! Cheers!! :)

you use : to nest:keys:down

cross platform you use __ to nest__keys__down (since : are bad for envars in *nix)

the key thing is it's not azure doing anything special... azure just sets env vars for the app from there. it's .net core config that's actually looking at the env vars and doing special things see https://docs.microsoft.com/en-us/aspnet/core/fundamentals/configuration/index?tabs=basicconfiguration&view=aspnetcore-3.1#hierarchical-configuration-data & https://docs.microsoft.com/en-us/aspnet/core/fundamentals/configuration/index?tabs=basicconfiguration&view=aspnetcore-3.1#environment-variables-configuration-provider