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Azure Blob Storage's Lifecycle Management runs once a day and can define up to 100 rules. However, the specific number of blobs that can be deleted in a single run is not explicitly defined. It's designed to handle large amounts of data, so it should be able to manage a significant number of blobs. Please note that once you configure a policy, it can take up to 24 hours for some actions to run for the first time.
Please refer https://learn.microsoft.com/en-us/azure/storage/blobs/lifecycle-management-policy-configure?tabs=azure-portal
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