If it's purely for backup, take a look at Google Cloud Storage. Pricing for Coldline Storage and Archive Storage is pretty low. - Source: Reddit / 2 months ago
Google Storage -: It will save our state of Terraform. - Source: dev.to / 9 days ago
Google Drive - Access and sync your files anywhere
VMware vSAN - VMware vSAN is radically simple, enterprise-class software-defined storage powering VMware hyper-converged infrastructure.
Dropbox - Online Sync and File Sharing
AWS Storage Gateway - AWS Storage Gateway is a service connecting an on-premises software appliance with cloud-based storage.
ownCloud - ownCloud is an open source project enabling businesses to host their own cloud storage while maintaining regulatory and compliance needs.
Azure Storage Explorer - Easily manage your Azure storage accounts in the cloud, from Windows, macOS, or Linux, using Azure Storage Explorer.