Azure Public IP Cost Management for Cloud Deployments

Managing public IP costs in Azure can be a challenge, but understanding the basics is key. Public IP addresses are a must-have for many cloud deployments, but they can add up in terms of cost.

Azure Public IP addresses are charged based on the number of public IP addresses used. This means that if you have multiple public IP addresses assigned to your resources, you'll be charged for each one.

To reduce costs, it's essential to only assign public IP addresses to resources that require them.

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You can reserve up to 20 Public IPs per subscription.

There is a cost associated with reserving a Public IP address.

The first 5 "static" public IP addresses in a region are free, regardless of the type of resource to which the IP address is associated.

All additional static public IP addresses are charged at $0.004/hr.

Cloud Service VIPs are also free, but additional VIPs are charged at $0.004/hr.

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Reserved IP addresses have a free first 5, and all others are charged at $0.004/hr.

Instance level public IP addresses are charged at $0.004/hr, with no free limit.

Here's a breakdown of Azure Public IP pricing:

Public IP addresses are charged per IP address per hour, with a minimum charge of 1 minute. This means you can save money by using a single public IP address for multiple resources, such as virtual machines and load balancers.

To take advantage of this, consider using a single public IP address for all your resources, and use private IP addresses for internal communication. This can help reduce your public IP costs significantly.

Azure also offers a feature called "static public IP addresses" which can be used to assign a public IP address to a resource, but this comes with an additional cost.

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Optimizing Public IP Costs requires a strategic approach to minimize expenses.

One effective cost optimization strategy is to implement IP address conservation techniques, such as using IPv6 and subnetting.

By doing so, you can reduce the number of public IP addresses required, leading to lower costs.

Another strategy is to utilize cloud services that offer free or low-cost public IP addresses, like AWS's free tier.

Cloud services can also help you scale your IP address usage as needed, without incurring additional costs.

Regularly reviewing and optimizing your public IP address allocation can also help identify areas for cost savings.

For example, terminating unused public IP addresses can prevent unnecessary costs from accruing.

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Reserved Public IP Address is a crucial step in optimizing public IP costs. You can reserve up to 20 Public IPs per subscription. This is a good thing to do for most organizations, as it ensures they don't lose their IP addresses if a site or VM is down or de-allocated.

There's a cost associated with reserving a Public IP address, but it's worth it in the long run. The pricing for reserved Public IPs varies depending on the deployment model.

Here's a breakdown of the pricing for reserved Public IPs in different deployment models:

You can reserve a Public IP address using PowerShell in the Classic Portal. First, check if you already have any reservations by using Get-AzureReservedIP. If you don't have any, you can reserve one using New-AzureReservedIP.