An organization is designing an Azure Resource Manager (ARM) template to automate the deployment of virtual machines and storage resources across multiple environments. The administrator needs to configure the template so that a new storage account is provisioned only when deploying to a production environment. Which ARM template element should be used to deploy the resource only when this requirement is met?

The condition element: ### What the condition element is The **`condition` element** in an **Azure Resource Manager (ARM) template** is a resource-level property used to control conditional deployments. It accepts an expression that evaluates dynamically to a boolean value (`true` or `false`) at runtime during template execution. ### How it meets the requirement - **Selective provisioning**: By adding the **`condition` element** to the storage account definition, the template evaluates whether the target environment equals production (e.g., `"[equals(parameters('environment'), 'production')]"`). - **Automatic lifecycle management**: When the condition evaluates to **`true`**, Azure Resource Manager deploys the resource. When it evaluates to **`false`**, Azure Resource Manager skips creating the resource. - **Dependency integration**: When a conditionally deployed resource evaluates to `false` and is not deployed, Azure Resource Manager automatically removes it from the required **dependency graph**, allowing dependent resources to proceed without failing. ### Key advantages and capabilities - **Unified templates**: Allows organizations to use a single ARM template across development, test, and production tiers without duplicating code. - **Flexible decision logic**: Works seamlessly with logical functions such as `equals()`, `bool()`, and `if()`. - **Dynamic dependency evaluation**: Automatically adjusts deployment order and dependency cascades based on which resources are actively provisioned. - **Optimized resource provisioning**: Prevents the creation of unnecessary, costly cloud infrastructure in non-production tiers. ### Why this is optimal The `condition` element is the built-in declarative mechanism in ARM templates specifically designed to toggle resource provisioning based on parameters or logical expressions without requiring external scripting.