How can you audit retail store sales transactions? Choose two complete approaches.

The Azure Blob Storage change feed provides a durable, ordered, and guaranteed log of all changes to blobs, making it ideal for auditing. An Azure Function can efficiently consume this feed and filter records by a specified time range to identify relevant transactions. Azure Event Grid allows you to react to events happening in Blob Storage, such as blob creation or modification. By subscribing to these events, an Azure Function can be triggered whenever a sales transaction (represented as a blob) occurs. The function can then filter these events based on store location metadata or content to perform auditing. Blob index tags are for searching and managing blobs, not for auditing changes over time. Blob versioning tracks different versions of a blob, but enumerating all daily versions for auditing sales transactions would be inefficient and not directly provide transaction-level audit trails. The blob inventory report provides a list of blobs and their properties at a specific point in time, not a continuous audit log of changes.