A willow-basket guild stores finished photos in Blob Storage and wants Find Blobs by Tags plus lifecycle filters on status=ready without putting that key in x-ms-meta user metadata. Which Blob Storage feature should the developer use?
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Short Explanation
Think of index tags as sticky color dots you can filter on in the warehouse aisle, not notes taped inside the crate. User metadata (x-ms-meta) rides with the blob but is not the Find Blobs by Tags surface. Put status=ready on index tags when you need query and lifecycle filters.
Full Explanation
Blob index tags are a first-class filter surface for Find Blobs by Tags and for lifecycle rule filters. User-defined metadata uses the x-ms-meta header family and is not interchangeable with tags for those query paths. Queue properties and Cosmos attributes belong to other services and do not replace blob index tags.