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Questions and Answers
What is the primary purpose of creating an IAM group?
What is a benefit of using IAM groups?
What are the two parts of an access key?
What is a recommended best practice for access keys?
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What can an IAM user be assigned?
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Who can assume an IAM role?
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What is a benefit of using IAM roles?
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What is the purpose of an IAM policy?
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What type of policy is attached to an IAM user or group?
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What is the effect of an IAM policy statement with an 'Allow' effect?
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What is NOT a benefit of using IAM roles?
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Study Notes
AWS IAM
Roles
- An IAM role is an IAM identity that can be assumed by anyone who needs to access AWS resources
- Roles are used to delegate access to users or services that need to access AWS resources
- Roles can be assumed by:
- IAM users
- AWS services (e.g. EC2, Lambda)
- External identities (e.g. Facebook, Google)
- Benefits:
- Temporary security credentials are issued when a role is assumed
- No need to share long-term credentials
- Easy to manage access to AWS resources
Policies
- An IAM policy is a document that defines a set of permissions
- Policies are used to grant or deny access to AWS resources
- Types of policies:
- Identity-based policies (attached to users, groups, or roles)
- Resource-based policies (attached to resources, e.g. S3 buckets)
- Organization-based policies (attached to an organization or organizational unit)
- Policy structure:
- Version
- Statement (one or more)
- Effect (Allow or Deny)
- Action (e.g. s3:GetObject)
- Resource (e.g. arn:aws:s3:::my-bucket)
Users
- An IAM user is an entity that represents a person or service that interacts with AWS resources
- Users can be created and managed in IAM
- Users can be assigned:
- Access keys (long-term credentials)
- Passwords (for console access)
- MFA devices (for added security)
- Users can be members of groups
Groups
- An IAM group is a collection of IAM users
- Groups can be used to simplify user management
- Groups can be assigned policies
- Benefits:
- Easier to manage large numbers of users
- Simplifies permission management
Access Keys
- Access keys are long-term credentials used to access AWS resources
- Access keys consist of:
- Access key ID (public)
- Secret access key (private)
- Types of access keys:
- Root access keys (created for the root user)
- IAM user access keys (created for IAM users)
- Best practices:
- Rotate access keys regularly
- Use IAM roles instead of access keys when possible
- Never share access keys
AWS IAM
Roles
- IAM roles are identities that can be assumed by users or services to access AWS resources
- Roles delegate access to users or services that need to access AWS resources
- Roles can be assumed by IAM users, AWS services, and external identities
- Roles provide temporary security credentials, eliminating the need to share long-term credentials
Policies
- IAM policies define a set of permissions for accessing AWS resources
- Policies grant or deny access to AWS resources
- There are three types of policies: identity-based, resource-based, and organization-based policies
- Policy structure consists of version, statement, effect, action, and resource
- Policies can be attached to users, groups, roles, resources, or organizations
Users
- IAM users are entities that represent people or services interacting with AWS resources
- Users can be created and managed in IAM
- Users can be assigned access keys, passwords, and MFA devices
- Users can be members of groups
Groups
- IAM groups are collections of IAM users
- Groups simplify user management and permission management
- Groups can be assigned policies
- Benefits of using groups include easier management of large numbers of users and simplified permission management
Access Keys
- Access keys are long-term credentials used to access AWS resources
- Access keys consist of an access key ID and a secret access key
- There are two types of access keys: root access keys and IAM user access keys
- Best practices for access keys include rotating them regularly, using IAM roles instead of access keys when possible, and never sharing access keys
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Description
Learn about IAM roles, their benefits, and how they delegate access to AWS resources. Understand how roles can be assumed by IAM users, AWS services, and external identities.
