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.
Google Marketing Platform - Google's unified and improved marketing and analytics tools.
Dropbox - Online Sync and File Sharing
StackAdapt - Native advertising demand side platform.
Google Drive - Access and sync your files anywhere
Smartly.io - Smartly.io is the leading Facebook ad optimization solution for agencies and performance marketers
Mega - Secure File Storage and collaboration