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Using Network Isolation to Secure Azure Data looks at how to network components like firewalls, network security groups, and endpoints to enhance the protection of Azure data sources. This lesson focuses on the special case of Azure data resources delivered as platform-as-a-service, such as Azure SQL, storage accounts, Azure Cosmos DB, and the like. Unlike data sources hosted on a virtual machine or an Azure SQL Managed Instance, which are deployed within a virtual network, PaaS data sources appear to transcend network topology by not operating within a network.