OEM means it was pre-activated for system builders (Dell, HP, Lenovo). ESD (Electronic Software Distribution) means it’s the compressed, encrypted format Microsoft uses for its own updates. The fact that someone repacked a 10in1 from ESD tells you two things:
This specifies the architecture. (64-bit) is the modern standard, allowing the OS to utilize more than 4GB of RAM and run both 64-bit and 32-bit applications. For any system built after 2010, the 64-bit version is non-negotiable for performance and security. windows 10 x64 19h1 10in1 oem esd enus july 20 top
Stands for Electronic Software Distribution . It indicates the files are compressed into an encrypted format to reduce the overall download size. en-US: The default language is United States English. OEM means it was pre-activated for system builders