Identity and access management for Application Migration Service - Application Migration Service

Identity and access management for Application Migration Service

AWS Identity and Access Management (IAM) is an AWS service that helps an administrator securely control access to AWS resources. IAM administrators control who can be authenticated (signed in) and authorized (have permissions) to use AWS resources. IAM enables you to create users and groups under your AWS account. You control the permissions that users have to perform tasks using AWS resources. You can use IAM for no additional charge.

By default, IAM users don't have permissions for Application Migration Service (Application Migration Service) resources and operations. To allow IAM users to manage Application Migration Service resources, you must create an IAM policy that explicitly grants them permissions, and attach the policy to the IAM users or groups that require those permissions.

When you attach a policy to a user or group of users, it allows or denies the users permission to perform the specified tasks on the specified resources. For more information, see Policies and Permissions in the IAM User Guide guide.

Policy structure

An IAM policy is a JSON document that consists of one or more statements. Each statement is structured as follows.

{ "Statement": [ { "Effect": "effect", "Action": "action", "Resource": "arn", "Condition": { "condition": { "key":"value" } } } ] }

There are various elements that make up a statement:

  • Effect: The effect can be Allow or Deny. By default, IAM users don't have permission to use resources and API actions, so all requests are denied. An explicit allow overrides the default. An explicit deny overrides any allows.

  • Action: The action is the specific Application Migration Service API action for which you are granting or denying permission.

  • Resource: The resource that's affected by the action. For Application Migration Service, you must specify "*" as the resource.

  • Condition: Conditions are optional. They can be used to control when your policy is in effect.