The text string you provided () does not refer to an academic paper. Instead, it is a file naming convention or a keyword string used on warez forums, torrent sites, or software repositories to describe a specific type of Windows installation media.
There is no such thing as a single, downloadable “OEM ESD” from Microsoft for the public. OEMs receive their own media via the Microsoft Device Partner Center. What you find online as “OEM ESD” is often a repackaged retail ISO with OEM files injected. Windows 7 10 11 X64 21H2 PRO OEM ESD en-US APRI...
Any website offering a single ESD file containing Windows 7, 10, and 11 together. The text string you provided () does not
Microsoft has never released, nor will ever release, an official image that bundles Windows 7, Windows 10, and Windows 11 together. Each operating system has different kernel versions, driver models, hardware requirements (especially TPM 2.0 and Secure Boot for Windows 11), and licensing structures. OEMs receive their own media via the Microsoft
The keyword includes Windows 7, but as of 2025, Windows 7 is completely unsupported (EOL since January 2020, ESU finished in 2023). Installing Windows 7 on modern hardware is: