AMIs with a contract: anatomy of EC2's new instance-type block

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AMIs with a contract: anatomy of EC2's new instance-type block

EC2 lets AMI owners declare supported instance types. I dissect the pattern: anatomy, when to use it, and why a glob is not an architecture predicate.

EC2 lets AMI owners declare supported instance types. I dissect the pattern: anatomy, when to use it, and why a glob is not an architecture predicate.