Unity build systems: internal vs gradle

Question

I cannot find anywhere what are the differences between internal and gradle. (I can find info about gradle, but unfortunately not about internal)

Can someone write pros

Answer 1

The Internal(Default) is used to build and even run your Unity Project on Android from the Editor. This can be done with the Build And Run button.

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The Gradle(New) option gives you extra option to export your Unity project into Android Studio project if the Export Project option is checked. The Export Project option can only be checked when Gradle(New) is selected. Gradle(New) option is mostly useful for the Android platform only.

Another advantage of Gradle(New) is that it allows you to specify your own gradle file to build your Unity Project. Just name the gradle file "mainTemplate.gradle" and put it in the Assets\Plugins\Android directory.

In the old days, to use gradle file in your build, you must export the Unity Project as Android Project then use a third party software like Android Studio or Eclipse to add gradle support to your app. The Gradle(New) made that easier. You can now do that without exporting the project at-all with the Gradle(New) option.