Security
IAM instance profile
Quick answer
An IAM instance profile attaches an AWS role to an EC2 instance so software on it can obtain temporary credentials without stored keys.
An IAM instance profile attaches an AWS role to an EC2 instance so software on it can obtain temporary credentials without stored keys.
Why it matters
For BYOC runners it is how a job authenticates to S3 or ECR without a long-lived access key sitting in a secret. Scope it narrowly — every job on that instance inherits it.
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Related
Audit logAn audit log is an append-only record of configuration and access changes, capturing who did what, when, and from where.Data residencyData residency is the requirement that data be stored and processed within a defined geographic boundary.GitHub AppA GitHub App is an integration that authenticates as itself with scoped, short-lived installation tokens rather than as a user.GITHUB_TOKENGITHUB_TOKEN is the automatically generated, short-lived token available to every workflow run for authenticating to the GitHub API.