AWS Storage Gateway - AWS Storage Gateway is a service connecting an on-premises software appliance with cloud-based storage.
Azure Archive Storage - Low cost, secure cloud storage for rarely accessed data.
VMware vSAN - VMware vSAN is radically simple, enterprise-class software-defined storage powering VMware hyper-converged infrastructure.
Amazon Glacier - Amazon Glacier is a secure, durable, and extremely low-cost storage service for data archiving and long-term backup.
Minio - Minio is an open-source minimal cloud storage server.
Barracuda Email Protection - Barracuda Essentials offers advanced Office 365 security features including email scanning, archiving, backup & recovery, and real-time phishing defense.