Starting with AutoCAD OEM 2023, the MSI created from the OEM Installer Wizard must be digitally signed, otherwise the installer will not run at the end user site.
After obtaining a digital certificate from a trusted certificate authorities (CAs), you can specify the certificate file and settings to use for signing the MSI file on the Digital Signature tab of the OEM Installer Wizard.
The whole procedure is explained in this short video.
If you want to learn more about AutoCAD (OEM) 2023 technical details, like system requirements, binary compatible versions, VS developer environment et. c. this post by Madhu on the ADN Dev blog explains everything.