Currently the Azure Blob Storage connection in PowerApps is just to be able to use an Excel file stored in a blob store as a data source.
We should have a Blob store connection that allows us to get blob content, uploab blob content, generate SAS all within PowerApps.
Some of this functionality is available in Flow, but this cannot for example return the SAS value to PowerApps directly.
Here is a blog post to learn more about the features: https://powerapps.microsoft.com/en-us/blog/upload-files-from-powerapps-using-the-azure-blob-storage-...
Great idea - would love to see this in reality
It would also be great to be able to display PDFs from Azure Blob Storage in the pdf control in PowerApps