Hey @Anonymous thank you for your question. Based on the question I think what you're looking for is here https://techcommunity.microsoft.com/t5/azure-storage-blog/general-availability-introducing-azure-ad-support-for-azure/ba-p/3826733 and https://learn.microsoft.com/en-us/azure/storage/files/authorize-oauth-rest?tabs=portal
In general Az storage files shares emulate on premises file servers with fine grained access control for users over SMB as documented here and with mind of the following https://learn.microsoft.com/en-us/azure/storage/files/storage-files-active-directory-overview#supported-authentication-scenarios