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  CORS (Cross-Origin Resource Sharing) rules in Azure Blob Storage are a set of configurations that allow or restrict web applications running in different domains to access the resources stored in Azure Blob Storage. CORS rules define which domains are allowed to make cross-origin requests and specify the HTTP methods, headers, and other request properties that are permitted. When a web application hosted on one domain tries to access resources (such as blobs) hosted on another domain (Azure Blob Storage), the browser performs a CORS preflight request to determine if the actual request is allowed. The preflight request is an HTTP OPTIONS request that includes specific headers indicating the intended request method, headers, and origin. To configure CORS rules in Azure Blob Storage, you can use the Azure portal, Azure CLI, Azure PowerShell, or Azure Storage client libraries. Here are the steps to set up CORS rules using the Azure portal: Go to the Azure portal ( https://portal.azure.co

  A Shared Access Signature (SAS) in Azure Blob Storage is a security token that grants restricted access to specific resources within a storage account. It provides a way to delegate limited permissions to clients or applications without sharing the account access keys. When creating a SAS, you define the permissions, expiry time, and other constraints to control what the holder of the SAS can do. This allows you to grant temporary and fine-grained access to your storage resources while maintaining control over them. To create a SAS in Azure Blob Storage, you typically follow these steps: Get a reference to the blob container or blob for which you want to create the SAS. Define the desired permissions (e.g., read, write, delete) for the SAS. Set the start time and expiry time for the SAS. Set any other constraints such as IP address restrictions or allowed protocols. Generate the SAS using the storage account's access key or a stored access policy. Share the generated SAS with the

  To delete a blob in Azure Blob Storage, you can use the Azure Storage SDK or the Azure Storage REST API. Here's an example of how to perform the delete operation using the Azure Storage SDK for .NET: using Azure.Storage.Blobs; using Azure.Storage.Blobs.Models; string connectionString = "<your_connection_string>" ; string containerName = "<your_container_name>" ; string blobName = "<your_blob_name>" ; // Create a BlobServiceClient object using the connection string BlobServiceClient blobServiceClient = new BlobServiceClient(connectionString); // Get a reference to the container BlobContainerClient containerClient = blobServiceClient.GetBlobContainerClient(containerName); // Get a reference to the blob BlobClient blobClient = containerClient.GetBlobClient(blobName); // Delete the blob Response<BlobDeletionInfo> response = blobClient.Delete(); Make sure to replace <your_connection_string> , <your_container