Migrating file share workloads to the cloud offers the benefit of limitless scalability, while transparently addressing concerns about high availability and resilience to system failure. File shares provide data access and management capabilities for files to any client, in any geography and data format, at any scale. A large number of factors must be considered when deciding on a cloud-based file service. This white paper explains the challenges of running shared storage for file services in the cloud, examines offerings available from public cloud providers, and explores a superior cloud-based file service.