We have been using Progress MoveIT Managed File Transfer solution (On-prem). Now we are looking for equivalent Cloud hosted Managed File Transfer services.  Any recommendations based on experience of such ?  There are many providers and so far those solutions - what we have studied - have been extremely expensive as we want to provide easy and secure ad hoc file transfer possibility to all our users who need transfer large files mainly externally. We have 20 000 users globally.

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AWS Transfer Family: Amazon Web Services offers AWS Transfer for SFTP, FTPS, and FTP, which can be a scalable and cost-effective solution. You can leverage AWS's global infrastructure and only pay for the resources you use.Azure File Storage: Microsoft Azure provides secure and scalable file storage options, including Azure Blob Storage and Azure File Storage, which can be used for file transfers. You can build a customized MFT solution using Azure services.Google Cloud Storage: Google Cloud offers various storage solutions, including Google Cloud Storage, which provides secure, scalable, and cost-effective storage

consider AWS Transfer for SFTP or Azure Logic Apps for Azure users. Both offer scalability and can be cost-effective. Azure Logic Apps supports multiple protocols and can integrate with various systems. Additionally, evaluate Google Cloud Storage and IBM Aspera for alternatives.