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Chapter 5: The Real Costs of Workloads 37 These materials are © 2017 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. Data transfer and getting out of the cloud Here's where things get dicey. Most cloud service providers don't charge you to bring data in to their environment from the Internet. But, when you start to move data out, things look a bit different. Take a look at Table 5‐1. Here, you see current outbound data transfer pricing from AWS. For this example, let's assume that, on average, you move 500TB per month of data out of the provider to a third‐party data protection service. In this case, you'll incur almost $29,000 per month in charges to perform this operation. Because of this and other hidden costs, more and more com- panies are pulling back from the cloud and returning some workloads to their on‐premises data centers. Although the public cloud can provide a great deal of flexibility, that flex- ibility often comes with a very steep price tag that you may not fully understand until your eyes pop out of your head on receiving your monthly cloud bill. Table 5-1 A Sample Monthly Data Transfer Charge Outbound Data Transfer U.S. Zone ($/GB) Move 500TB Out First 1 GB / month $0.000 $0.00 Up to 10 TB / month $0.090 $899.91 Next 40 TB / month $0.085 $3,400.00 Next 100 TB / month $0.070 $7,000.00 Next 350 TB / month $0.050 $17,500.00 Total Per Month $28,799.91