...
Steam: you will now be able to access Exodus SDK as a Tool and launch it from Steam.
Epic Games Store: find sdk>bin_x64 folder in the Metro Exodus game folder and launch Exodus_SDK.exe.
GOG: you can launch Exodus SDK from the launcher (Additional Executables → SDK).
...
We recommend installing the SDK on your SSD rather than HDD – this will improve your experience with the engine:
it brings higher stability to the engine's workflow.
it launches the mods, levels, and the editor significantly faster.
it allows for a speedier creation of mods.
How to Download and Upload Mods:
...