1

This downloads standalone MSVC compiler, linker & other tools, also headers/libraries from Windows SDK into portable folder, without installing Visual Studio. Has bare minimum components - no UWP/Store/WindowsRT stuff, just files & tools for native desktop app development.

3

Run `py.exe portable-msvc.py` and it will download output into `msvc` folder. By default it will download latest available MSVC & Windows SDK from newest Visual Studio.

5

You can list available versions with `py.exe portable-msvc.py --show-versions` and then pass versions you want with `--msvc-version` and `--sdk-version` arguments.