# AmazonSSMManagedInstanceCore
<a name="AmazonSSMManagedInstanceCore"></a>

**Description**: The policy for Amazon EC2 Role to enable AWS Systems Manager service core functionality.

`AmazonSSMManagedInstanceCore` is an [AWS managed policy](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_managed-vs-inline.html#aws-managed-policies).

## Using this policy
<a name="AmazonSSMManagedInstanceCore-how-to-use"></a>

You can attach `AmazonSSMManagedInstanceCore` to your users, groups, and roles.

## Policy details
<a name="AmazonSSMManagedInstanceCore-details"></a>
+ **Type**: AWS managed policy 
+ **Creation time**: March 15, 2019, 17:22 UTC 
+ **Edited time:** May 23, 2019, 16:54 UTC
+ **ARN**: `arn:aws:iam::aws:policy/AmazonSSMManagedInstanceCore`

## Policy version
<a name="AmazonSSMManagedInstanceCore-version"></a>

**Policy version:** v2 (default)

The policy's default version is the version that defines the permissions for the policy. When a user or role with the policy makes a request to access an AWS resource, AWS checks the default version of the policy to determine whether to allow the request. 

## JSON policy document
<a name="AmazonSSMManagedInstanceCore-json"></a>

```
{
  "Version" : "2012-10-17",
  "Statement" : [
    {
      "Effect" : "Allow",
      "Action" : [
        "ssm:DescribeAssociation",
        "ssm:GetDeployablePatchSnapshotForInstance",
        "ssm:GetDocument",
        "ssm:DescribeDocument",
        "ssm:GetManifest",
        "ssm:GetParameter",
        "ssm:GetParameters",
        "ssm:ListAssociations",
        "ssm:ListInstanceAssociations",
        "ssm:PutInventory",
        "ssm:PutComplianceItems",
        "ssm:PutConfigurePackageResult",
        "ssm:UpdateAssociationStatus",
        "ssm:UpdateInstanceAssociationStatus",
        "ssm:UpdateInstanceInformation"
      ],
      "Resource" : "*"
    },
    {
      "Effect" : "Allow",
      "Action" : [
        "ssmmessages:CreateControlChannel",
        "ssmmessages:CreateDataChannel",
        "ssmmessages:OpenControlChannel",
        "ssmmessages:OpenDataChannel"
      ],
      "Resource" : "*"
    },
    {
      "Effect" : "Allow",
      "Action" : [
        "ec2messages:AcknowledgeMessage",
        "ec2messages:DeleteMessage",
        "ec2messages:FailMessage",
        "ec2messages:GetEndpoint",
        "ec2messages:GetMessages",
        "ec2messages:SendReply"
      ],
      "Resource" : "*"
    }
  ]
}
```

## Learn more
<a name="AmazonSSMManagedInstanceCore-learn-more"></a>
+ [Create a permission set using AWS managed policies in IAM Identity Center](https://docs.aws.amazon.com/singlesignon/latest/userguide/howtocreatepermissionset.html) 
+ [Adding and removing IAM identity permissions](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_manage-attach-detach.html) 
+ [Understand versioning for IAM policies](https://docs.aws.amazon.com//IAM/latest/UserGuide/access_policies_managed-versioning.html)
+ [Get started with AWS managed policies and move toward least-privilege permissions](https://docs.aws.amazon.com//IAM/latest/UserGuide/best-practices.html#bp-use-aws-defined-policies)