[Question] Products with similar names, yet different ProductIDs

[xeacott]

I wanted to ask this question as I've seen this a few times in response data and I want to make sure I'm not missing something.

In the case of Windows 10, various KBs are targeted to various builds, and therefore it makes sense to list versions of Windows 10 as such:

        "Windows 10 Version 1703 for 32-bit Systems": "10951",
        "Windows 10 Version 1703 for x64-based Systems": "10952",
        "Windows 10 Version 1709 for 32-bit Systems": "11453",
        "Windows 10 Version 1709 for ARM64-based Systems": "11583",
        "Windows 10 Version 1709 for x64-based Systems": "11454",
        "Windows 10 Version 1803 for 32-bit Systems": "11497",
        "Windows 10 Version 1803 for ARM64-based Systems": "11563",
        "Windows 10 Version 1803 for x64-based Systems": "11498",

But for Windows Server, things look a little different:

        "Windows Server 2012": "10378",
        "Windows Server 2012 (Server Core installation)": "10379",
        "Windows Server 2012 R2": "10483",
        "Windows Server 2012 R2 (Server Core installation)": "10543",
        "Windows Server 2016": "10816",
        "Windows Server 2016 (Server Core installation)": "10855",
        "Windows Server 2019": "11571",
        "Windows Server 2019 (Server Core installation)": "11572",
        "Windows Server, version 1709 (Server Core Installation)": "11466",
        "Windows Server, version 1803 (Server Core Installation)": "11499",
        "Windows Server, version 1903 (Server Core installation)": "11647",

What are the differences between Windows Server, version 1903 (Server Core installation) and Windows Server 2019 (Server Core installation)"?