Microsoft .NET Framework 4.8 or later is required for System Platform 2023 R2 SP1.
When the System Platform installation process begins, it automatically checks the
.NET version and installs the correct version if needed.
The Application Object Toolkit (AOT) is not included in the System Platform 2023 R2
SP1 release, but if you use AOT to build objects for Application Server, verify that
you have installed and configured the developer pack for .NET Framework 4.8 when you
create your AOT solution in Visual Studio.