TLDR
Instance Metadata Service (IMDS) provides “data about your instance that you can use to configure or manage the running instance’s. Instance metadata is divided into categories, for example, host name, events, and security groups. Every instance has access to its own MDS using any HTTP client request, such as, curl command from the instance to http://169.169.254/latest/meta-data/. IMDSv2 uses session-oriented requests to access the locally-stored EC2 instance metadata.via the TL;DR App
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