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The following is a sample of a document in orders. The orders container uses customer as the partition key. You need to provide a report of the total items ordered per month by item type. The solution must meet the following requirements: Ensure that the report can run as quickly as possible. Minimize the consumption of request units (RUs). What should you do?
Correct Answer: B
You can facilitate aggregate data by using Change Feed and Azure Functions, and then use it for reporting. Reference: https://docs.microsoft.com/en-us/azure/cosmos-db/change-feed