Currently, there is a provision to map an application to a domain in ODC. Let's hope that OutSystems will soon introduce this feature.

@Joseph Marlin was very helpful and pointed me in the right direction. All credit goes to him.

There is currently no way to set a default application for a URL, so the app must be accessed using the AppName as part of the URL.

However, a workaround to ensure the correct custom URL is used for a particular app involves adding code to a shared component that all apps use, such as the LayoutTopMenu web block. I used the OnReady event to check the client's URL and compare it to a site property set for that app, indicating the desired URL. If the client accessed the app with a different URL, I can either throw an exception or redirect to the custom URL, depending on my preference.

1. Create a settings variable for the custom domain.

• Can be a text variable and you can assign the default value to the custom domain of your choice.

2. Create a server action for redirecting the URL.

• One input parameter (CurrentURL)
• One output parameter (NewURL)
• One variable (CustomDomain)
• All text data types

3. Adjust logic OnReady (LayoutTopMenu)

• New variable (CurrentURL) for OnReady

Hope this can help you if you stumble across a similar challenge.