It depends mostly on your use-case and how you plan to access the data. If you simply want to mount and access your files Azure Files will be your best fit. If you are looking for the lowest cost and want to access your data programmatically through your application Azure Blob would be a better fit. Both are accessible through the portal or Azure Storage Explorer. So if this is all you need to do Blob would be the lower cost option.
That being said you should read through the page here which gives many examples. I also recommend this Learn module which covers the difference in data types and solutions. Let me know if you still have questions or need further clarification.
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@Biswajeet Kumar Azure File Share is a managed File System. I wouldn't necessarily say it is structured data like Table Storage. Yes, Blob storage can be mounted, see Mount Blob storage by using the Network File System (NFS) 3.0 protocol. Here is a good comparison for Blobs and Files NFS protocols.
This shows mounting in Linux system, I am looking for windows VM..