I am managing IT for a regional healthcare partner who have about 20 sites with the following setup: 1 Domain controller, 1 File Share, 1 local Firewall (sonicwall, in this case). All of the sites are joined by the same Domain.
My goal is to get all of AD managed on Azure AD with Azure ADDS, and use OneDrive for the file shares. Is a solution like that feasible, or would I need at least one IaaS machine in Azure to serve as my indirect replacement of those local servers?
I'm new to this and looking for best practice advice.