"Samsung’s new Temporary Cloud Backup will allow users access to free file storage for up to 30 days in the cloud. The only limitation is that files need to be under 100 GB each; beyond that, users can store as many files as they like through their Samsung device running One UI 6.0 or higher."
While sharing something, if you need to move away from the person you're sharing files with, this will allow you to switch to uploading to the cloud temporarily, and the other guy will download from there.
This is only if you're not near each other.
Similar to Apple's thing that they launched recently. Airdrop something.
A huge part of choosing a cloud provider is the trust they'll be around - this is Samsung's third or fourth attempt at cloud services, bouncing around wanting one of their own versus using Microsoft's.
I wouldn't trust them, if only for the inconvenience of having to migrate every time they change their mind.