The Ultimate Guide to Amazon EC2 Reserved Instances

Amazon EC2 Instances are priced in three ways: On-Demand, where you pay full price; Spot, where your price is determined by market availability; and Reserved, where you receive a discount based on a commitment to pay for a certain amount of EC2 usage, whether you use the hours or not. When you purchase an EC2 reservation, you’re essentially purchasing a coupon. 

Amazon EC2 Reserved Instances (RIs) allow you to make a commitment to AWS to utilize specific instance types in return for a discount on your compute costs. In addition, some RIs have a capacity assurance which give you preference if there is ever a capacity constraint in a Region. The benefits? Savings and guaranteed capacity (for some RI types).

Whether you’re actively pursuing Amazon EC2 Reserved Instances as a cost-saving measure, or just beginning to explore it as a possibility, read this eBook to learn more. 

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