AMI
Explore how Amazon Machine Images (AMIs) are used to prepackage software and OS configurations for AWS EC2 instances. Understand creating, sharing, and copying AMIs across regions, and learn the advantages of using AMIs for faster instance launch and custom setups. Discover the EC2 Image Builder service for automating AMI creation and testing.
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Amazon Machine Images
Amazon Machine Images (AMIs) are a set of custom software configurations and an OS that are loaded into our EC2 machines. While creating EC2 instances, we can choose from a list of AMIs created by us (custom AMIs), AWS (for example, AmazonLinux2), or other AWS developers.
Some of the AMIs from other developers are free to use, but we’ll have to pay for some AMIs in the AWS AMI Marketplace.
Note: Be careful not to use AMIs from an untrusted source because that can be a potential security risk.
We can also install and configure software automatically into new EC2 instances using the EC2 user data. However, doing this through AMIs provides a faster boot time because all our software and configurations are prepackaged.
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