For hosting common files it's ok. Also it is on Android too do, great to transfer files between your Windows and your phone. But if you want better security you have to subscribe a monthly offer.
Veeam Backup - Backup and restore VMware and Hyper-V virtual machines with Veeam Backup Free Edition. Unlimited hosts and VMs. Free forever.
Dropbox - Online Sync and File Sharing
Zerto - Virtual replication & recovery solution
Google Drive - Access and sync your files anywhere
SolarWinds Backup - Modern server backup software
Mega - Secure File Storage and collaboration