A Microsoft file hosting and synchronization service.
Hello,
Go to your Start menu and see if you already have the OneDrive app installed. If so, go ahead and run it, sign in. If you don't have it installed, you will need to download it, install it back and then set it up. You can download it from here: https://www.microsoft.com/microsoft-365/onedrive/download
Once it is signed in, you will find the OneDrive folder in your File Explorer, and you can start putting things there to sync to the cloud.