Terminology Description Remarks
Account Account An account
User User A RAM user under an account
Group Group or user group A RAM user group under an account
Policy Authorization policy A language used to describe policies
AK (AccessKey) Access key An AK is composed of AccessKeyID and AccessKeySecret, and is used for identity authentication in Alibaba Cloud service API requests
MFA (Multi-Factor Authentication) Multi-Factor Authentication You can associate your account or RAM users with MFA devices to enhance security.