Mastering Successful Deployments: Validating with What-If Deployment and Azure Policies

As organizations increasingly embrace the cloud, maintaining control over their infrastructure and ensuring compliance with security and governance policies becomes crucial. Azure, Microsoft’s cloud platform, offers a comprehensive set of tools and services to help organizations manage and govern their resources effectively. One such tool is Azure Policies, which enables the definition and enforcement of rules for resource management. In this blog post, we will explore the benefits of leveraging What-If deployment with Azure Policies to ensure secure and compliant cloud operations.

Understanding What-If Deployment

Before delving into Azure Policies, let’s first understand What-If deployment. What-If is a powerful feature in Azure that allows you to simulate the impact of deploying or modifying resources without actually making any changes to your environment. It provides a preview of the changes and highlights any potential issues or non-compliance before the actual deployment. This feature is particularly useful in complex or sensitive environments where it is crucial to avoid unintended consequences.

Here’s an example of performing a “what-if” deployment using Azure CLI:

To demonstrate the process, let’s configure a resource group deployment within the ‘NorthEurope’ region. Execute the following code:

az deployment sub what-if --template-file .\ResourceGroup.bicep --location northeurope

Please keep in mind that at the moment, no policies are configured.

As you can see, the deployment allows us to create the resource group successfully. Now, let’s apply a policy that restricts resource group deployment to the ‘West Europe’ region. We will assign this policy to the management group to which the subscription belongs.

The policy goes by the name “Allowed locations for resource groups” and is intended to ensure that resource groups are created in appropriate locations.

With this policy, we have set the permitted location for resource group deployment to be exclusively in the “West Europe” region. This restriction ensures that resource groups are established only in this specific geographical area.

To provide a user-friendly experience for developers, we have crafted easy-to-understand “Non-compliance Messages.” These messages are designed to offer clear explanations as to why certain actions, such as attempting to deploy resource groups in locations other than “West Europe,” are not allowed. By providing clear and friendly guidance, developers can easily comprehend the restrictions and make necessary adjustments.

After applying the policy, we run the code again. As you can observe, the deployment is now disallowed, indicating that it does not comply with the policy restrictions.

Conclusion:

By integrating Azure Policies with What-If deployment, you can establish a strong cloud governance framework that reduces risks, guarantees compliance, and improves operational efficiency. These tools enable proactive evaluation of changes, ensuring alignment with policies and simplifying cloud management. Embracing this approach empowers you to confidently adopt cloud technologies while maintaining control, security, and compliance.

Author: Eelco Labordus

I am an experienced Azure Cloud Architect with a proven track record in the information technology and services industry. With a deep passion for teaching, I thrive in collaborative team environments where I can contribute to the growth and success of my colleagues. My expertise lies in Azure Cloud, Data Center platforms, Automation, PowerShell, Windows Azure Pack, Azure(stack), System Center, VMware Infrastructure, Scrum, Management, and Process Management. I am a strong information technology professional, holding a degree from Hogeschool Novi.

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