An Azure service that offers file shares in the cloud.
@Random_Guy Adding more information to @Sai response
Are you planning to use Premium File Storage or Azure Storage Account (GPV2)?
May I know the region and data size? Since pricing varies based on the Size, regions and storage type
The difference between blobs and files, not including transactions which are an important component of price, for 100 TiB is $512/month. Cool for Files is $0.015/GiB/month,
Comparison matrix : https://learn.microsoft.com/en-us/azure/storage/solution-integration/validated-partners/data-management/migration-tools-comparison
We have assessment tool: Azure Migrate but not specific to one service Azure files share.
Using Azure migrate you can review migration activity at one place: Download the blog mentioned here which gives detailed information on Migrate
You can use Azure Monitor for tacking(read/write/list/transfers) This article describes the monitoring data that's generated by Azure Files and how you can use the features of Azure Monitor to analyze alerts on this data.
Azure Files monitoring data reference
Additional information : Improving your migration performance when using Migration Manager
Frequently Asked Questions: Migration Manager
Looking forward for your reply!