Import STEP from Altium

Good morning,
I have seen several videos of integration between 3DS and Altium, where the STEP files are shared. I wanted to understand, if it is enough to import STEP into 3DS, then the system converts it and makes it available to everyone, or if we need a conversion, on our part, from STEP to Solidworks and then imported to 3DS.
This significantly changes the effort and time required.

Mirko