what is difference between #user and #role in #aws #iam

In AWS IAM, both users and roles can be used to grant access to AWS resources, but there are some key differences between the two.

Users:

1. A user is an identity within AWS that represents a person or an application that interacts with AWS resources.

2. Users are assigned a unique set of security credentials (such as a username and password) that are used to authenticate their identity and control their access to resources.

3. Users can be granted permissions to access AWS resources directly through policies attached to their user account.

4. Users can be added to groups to simplify permission management and to assign permissions to a group of users at once.

Roles:

1. A role is an AWS IAM entity that defines a set of permissions for making AWS service requests.

2. Unlike a user, a role doesn't have any credentials, such as a password or access key. Instead, roles are assumed by trusted entities, such as an AWS service or a user.

3. Roles can be used to delegate access to AWS resources across accounts, allowing users from one account to access resources in another account.

4. Roles can be associated with AWS services, such as EC2 instances, to grant temporary access to resources when needed.

Overall, while users are typically used to represent human users or applications that need access to AWS resources, roles are used to define a set of permissions that can be assumed by trusted entities. Roles provide a flexible way to manage access to resources across accounts and can be used to grant temporary access to resources when needed.