Batch API for Azure Blob Storage preview simplifies development of your applications that make several concurrent API requests to Blob storage. Batch API reduces the number of connections a client has to open, manage and distribute the requests to by allowing multiple API calls to be embedded into a single HTTP request.
Currently the API supports two types of sub-requests: SetBlobTier for Block Blobs and DeleteBlob, with more requests to follow. This API is available starting version 2018-11-09.
Source: Microsoft Azure – aggiornamenti