![]() Note: You can avoid using public IP addresses for internal data transfers within the same AZ. Essentially, any time there is bandwidth cost, you pay for transferring out of the Availability Zone (AZ) and into the AZ. Amazon Relational Database Service (Amazon RDS)Ĭheck out Corey Quinn’s article on this. ![]() InterZone-In and InterZone-Out: Data transferred “into” and “out of” the following services across Availability Zones or Amazon Virtual Private Cloud (Amazon VPC) peering connections in the same AWS Region are charged at $0.01/GB in each direction. For each dimension, I will share tips for reducing your cost. Let’s start with Operations related to networking costs. While researching this blog post, I came across a useful diagram from the open-guides repository on GitHub that illustrates the various costs associated with AWS data transfer: Source: GitHub – Open-Guides/Og-AWS: Amazon Web Services - a practical guide. Check out my other blog post about tracking growth of these services to catch anomalies in your AWS spend. In addition to the sheer volume of different dimensions, there are always new resources getting launched, so it becomes challenging to get a grip on the networking cost. And, I’ll provide tips on how the nOps cloud management platform can help you detect data transfer costs that can be reduced by taking necessary actions. I’ll show you how to quickly find the resources related to the bandwidth cost so you can make the right architecture decisions. For example, if you see a large InterZone-In or -Out cost on your AWS bill, there are steps you can take to reduce bandwidth cost. Some of the data transfer costs can be avoided. All the dimensions are charged at different rates. I will cover the most common ones under Operation in this blog post. Suffice it to say, bandwidth cost has many dimensions. And, more specific costs like USW1-AWS-In-Bytes can be filtered by Usage type. Generic costs like InterZone-In or VPCPeering-In can be filtered by Operation, enabling you to find resources that might generate unnecessary Operation costs. In AWS Cost Explorer, you can filter by Usage type, but the AWS CUR also has an Operation line item. When you filter spend by Usage type and Operation, you can deepen your understanding of your bandwidth cost and see which resources generate this cost. There are many line items in the AWS Cost and Usage Report (AWS CUR). In this specific post, I’ll cover data transfer costs related to the Amazon Elastic Compute Cloud (Amazon EC2) service, and how these charges appear on your AWS bill. In this series of blog posts, we’ll do a deep dive into the costs of AWS services.
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