IAM (Identity and Access Management) kontrollerer hvem der kan gøre hvad i AWS — administration af brugere, grupper, roller og tilladelser. Det er grundlæggende for AWS-sikkerhed: hver handling godkendes gennem IAM, så forståelse heraf er essentiel.
Hvad IAM administrerer
IAM controls AUTHENTICATION (who you are) and AUTHORIZATION (what you can do):
USERS → individual identities (people or applications) with credentials
GROUPS → collections of users (assign permissions to a group → all its users get them)
ROLES → identities ASSUMED temporarily (by users, services, or AWS resources)
— no permanent credentials; key for services/cross-account access
POLICIES → JSON documents defining PERMISSIONS (what actions on what resources)
