You need to purchase a third-party virtual security appliance that you will deploy to an Azure subscription. What should you use?

Azure Marketplace is an online store that contains thousands of IT software applications and services built by Microsoft and third-party technology partners. It is the designated platform for discovering, trying, and purchasing software and services, including virtual security appliances, that are certified and optimized to run on Azure. Customers can deploy these solutions directly to their Azure subscriptions from the Marketplace.

B. Azure Security Center: This service (now part of Microsoft Defender for Cloud) is for unified security management and advanced threat protection; it is not a marketplace for purchasing applications.

C. Microsoft Store: This is a digital storefront for consumer-facing applications, games, and entertainment, primarily for the Windows operating system, not for enterprise-grade Azure virtual appliances.

D. Azure subscriptions: An Azure subscription is a logical container and billing boundary for provisioning and managing Azure resources. You deploy appliances to a subscription, but you do not acquire them from it.

1. Microsoft Learn. "Describe Azure Marketplace." Describe Azure compute and networking services. This document states, "Azure Marketplace is an online store that hosts applications that are certified and optimized to run in Azure... You can think of Azure Marketplace as the app store for Azure."

Source: https://learn.microsoft.com/en-us/training/modules/describe-azure-compute-networking-services/5-describe-azure-marketplace, Section: "What is Azure Marketplace?".

2. Microsoft Learn. "What is Azure Marketplace?" Azure Marketplace documentation. This source clarifies, "Azure Marketplace is an online market for buying and selling cloud solutions certified to run on Azure. The Azure Marketplace helps connect companies seeking innovative, cloud-based solutions with partners who have developed solutions that are ready to use."

Source: https://learn.microsoft.com/en-us/azure/marketplace/azure-marketplace-overview, Section: "What is Azure Marketplace?".

3. Microsoft Learn. "Describe the functionality and usage of Microsoft Defender for Cloud." Describe security management in Azure. This document explains that Defender for Cloud is a "monitoring service that provides threat protection" and is used for "security posture management," confirming it is not a purchasing platform.

Source: https://learn.microsoft.com/en-us/training/modules/describe-security-management-azure/3-describe-microsoft-defender-for-cloud, Section: "Introduction".

4. Microsoft Learn. "Describe Azure subscriptions." Describe Azure management and governance. This resource defines a subscription as a "logical unit of Azure services that links to an Azure account" and a "deployment boundary for Azure resources," distinguishing it from a marketplace.

Source: https://learn.microsoft.com/en-us/training/modules/describe-azure-management-infrastructure/2-describe-azure-subscriptions, Section: "What is an Azure subscription?".