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Run Docker containers on-demand in a managed, serverless Azure environment. Azure Container Instances is a solution for any scenario that can operate in isolated containers, without orchestration. Run event-driven applications, quickly deploy from your container development pipelines, and run data processing and build jobs.

You can manage containers at scale with a fully managed Kubernetes container management and orchestration service that integrates with Azure Active

Directory.

Azure Kubernetes Service is a robust and cost-effective container orchestration service that helps you to deploy and manage containerized applications in seconds where additional resources are assigned automatically without the headache of managing additional servers.

An Azure virtual machine (VM) is a software emulation of a computer system running on the Azure cloud platform. When you create a VM in Azure, you need to provide some basic configuration details, including the virtual hardware specifications and the operating system image. One important resource that you need to associate with the VM is a virtual network.

A virtual network in Azure is a logically isolated network that provides connectivity to other Azure resources and the internet. Each VM must be associated with a virtual network, which provides the communication channel between the VM and other resources in Azure. The virtual network defines the IP address range, subnets, and routing tables for the VM, and it can be configured with various security features, such as network security groups and Azure Firewall.

A service endpoint is a configuration option that you can use to restrict network traffic to a specific Azure service. Service endpoints enable you to improve the security of your VMs by limiting inbound traffic to the virtual network to a specific service or a set of services. However, service endpoints are not required for every VM.

Azure Firewall is a network security service that provides centralized network security policy management and protection for your Azure virtual network resources. Azure Firewall can be used to enforce network security policies, filter network traffic, and provide visibility and analytics into network activity. However, Azure Firewall is not required for every VM.

A public IP address is a globally routable IP address that can be used to access your VM from the internet. Public IP addresses can be associated with a VM or a load balancer to enable access to the VM from outside the virtual network. However, not every VM requires a public IP address, and it is often recommended to restrict access to VMs through a VPN or a private endpoint.

Therefore, the correct answer to the question is A. a virtual network, as every Azure virtual machine requires an associated virtual network to provide network connectivity and security features.

To manage containers in Azure, you can use Azure Container Instances (ACI) and Azure Kubernetes Service (AKS). Here's a more detailed explanation of each service:

1. Azure Container Instances (ACI): ACI is a serverless container solution in Azure that allows you to run Docker containers directly without any need to manage underlying virtual machines. You only pay for the time your containers run, and it automatically scales up and down to meet your demands. ACI is ideal for running containers that require fast start-up times or short-lived tasks, such as batch processing, job scheduling, or development and testing environments.

2. Azure Kubernetes Service (AKS): AKS is a fully managed Kubernetes container orchestration service that allows you to deploy, scale, and manage containerized applications with ease. Kubernetes is an open-source container orchestration platform that automates the deployment, scaling, and management of containerized applications. With AKS, you can run containers across a cluster of virtual machines that automatically scale based on your needs. AKS is ideal for running complex, long-running applications that require high availability, fault tolerance, and scalability.

In summary, if you want to manage containers in Azure, you can use Azure Container Instances (ACI) for serverless container deployments or Azure Kubernetes Service (AKS) for a fully managed Kubernetes container orchestration solution.