Change feed support is now generally available for Azure Blob Storage
Published date: September 09, 2020
Change feed provides a guaranteed, ordered, durable, read-only log of all the creation, modification, and deletion change events that occur to the blobs in your storage account.
Change feed is the ideal solution for bulk handling of large volumes of blob changes in your storage account, as opposed to periodically listing and manually comparing for changes. It enables cost-efficient recording and processing by providing programmatic access such that event-driven applications can simply consume the change feed log and process change events from the last checkpoint.
Read the Change Feed documentation.