# CfnManagedPolicy

Creates a new managed policy for your AWS account .

This operation creates a policy version with a version identifier of `v1` and sets v1 as the policy's default version. For more information about policy versions, see [Versioning for managed policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/policies-managed-versions.html) in the *IAM User Guide* .

As a best practice, you can validate your IAM policies. To learn more, see [Validating IAM policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_policy-validator.html) in the *IAM User Guide* .

For more information about managed policies in general, see [Managed policies and inline policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/policies-managed-vs-inline.html) in the *IAM User Guide* .

Extends: Construct › CfnElement › CfnRefElement › CfnResource › CfnManagedPolicy
Implements: IInspectable, IEnvironmentAware, IManagedPolicyRef, IConstruct, IDependable

- CloudFormation: [`AWS::IAM::ManagedPolicy`](https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-resource-iam-managedpolicy.html)
- Source: Generated code
- Type last changed: v2.252.0 · 30 Apr 2026

## Example

```ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import { aws_iam as iam } from 'aws-cdk-lib';

declare const policyDocument: any;
const cfnManagedPolicy = new iam.CfnManagedPolicy(this, 'MyCfnManagedPolicy', {
  policyDocument: policyDocument,

  // the properties below are optional
  description: 'description',
  groups: ['groups'],
  managedPolicyName: 'managedPolicyName',
  path: 'path',
  roles: ['roles'],
  users: ['users'],
});
```

## Initializer

```ts
new CfnManagedPolicy(scope: Construct, id: string, props: CfnManagedPolicyProps)
```

## Construct Props

- `description`: string — A friendly description of the policy.

  Typically used to store information about the permissions defined in the policy. For example, "Grants access to production DynamoDB tables."

  The policy description is immutable. After a value is assigned, it cannot be changed.

- `groups`: string | [IGroupRef](/cdk/api/v2/docs/aws-cdk-lib.interfaces.aws_iam.IGroupRef.html)[] — The name (friendly name, not ARN) of the group to attach the policy to.

  This parameter allows (through its [regex pattern](https://docs.aws.amazon.com/http://wikipedia.org/wiki/regex) ) a string of characters consisting of upper and lowercase alphanumeric characters with no spaces. You can also include any of the following characters: _+=,.@-

- `managedPolicyName`: string — The friendly name of the policy.

  > If you specify a name, you cannot perform updates that require replacement of this resource. You can perform updates that require no or some interruption. If you must replace the resource, specify a new name.

  If you specify a name, you must specify the `CAPABILITY_NAMED_IAM` value to acknowledge your template's capabilities. For more information, see [Acknowledging IAM Resources in CloudFormation Templates](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-iam-template.html#using-iam-capabilities) .

  > Naming an IAM resource can cause an unrecoverable error if you reuse the same template in multiple Regions. To prevent this, we recommend using `Fn::Join` and `AWS::Region` to create a Region-specific name, as in the following example: `{"Fn::Join": ["", [{"Ref": "AWS::Region"}, {"Ref": "MyResourceName"}]]}` .

- `path`: string = "/" — The path for the policy.

  For more information about paths, see [IAM identifiers](https://docs.aws.amazon.com/IAM/latest/UserGuide/Using_Identifiers.html) in the *IAM User Guide* .

  This parameter is optional. If it is not included, it defaults to a slash (/).

  This parameter allows (through its [regex pattern](https://docs.aws.amazon.com/http://wikipedia.org/wiki/regex) ) a string of characters consisting of either a forward slash (/) by itself or a string that must begin and end with forward slashes. In addition, it can contain any ASCII character from the ! ( `\u0021` ) through the DEL character ( `\u007F` ), including most punctuation characters, digits, and upper and lowercased letters.

  > You cannot use an asterisk (*) in the path name.

- `policyDocument`: any (required) — The JSON policy document that you want to use as the content for the new policy.

  You must provide policies in JSON format in IAM. However, for CloudFormation templates formatted in YAML, you can provide the policy in JSON or YAML format. CloudFormation always converts a YAML policy to JSON format before submitting it to IAM.

  The maximum length of the policy document that you can pass in this operation, including whitespace, is listed below. To view the maximum character counts of a managed policy with no whitespaces, see [IAM and AWS STS character quotas](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_iam-quotas.html#reference_iam-quotas-entity-length) .

  To learn more about JSON policy grammar, see [Grammar of the IAM JSON policy language](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_grammar.html) in the *IAM User Guide* .

  The [regex pattern](https://docs.aws.amazon.com/http://wikipedia.org/wiki/regex) used to validate this parameter is a string of characters consisting of the following:

  - Any printable ASCII character ranging from the space character ( `\u0020` ) through the end of the ASCII character range
  - The printable characters in the Basic Latin and Latin-1 Supplement character set (through `\u00FF` )
  - The special characters tab ( `\u0009` ), line feed ( `\u000A` ), and carriage return ( `\u000D` )

- `roles`: string | [IRoleRef](/cdk/api/v2/docs/aws-cdk-lib.interfaces.aws_iam.IRoleRef.html)[] — The name (friendly name, not ARN) of the role to attach the policy to.

  This parameter allows (per its [regex pattern](https://docs.aws.amazon.com/http://wikipedia.org/wiki/regex) ) a string of characters consisting of upper and lowercase alphanumeric characters with no spaces. You can also include any of the following characters: _+=,.@-

  > If an external policy (such as `AWS::IAM::Policy` or `AWS::IAM::ManagedPolicy` ) has a `Ref` to a role and if a resource (such as `AWS::ECS::Service` ) also has a `Ref` to the same role, add a `DependsOn` attribute to the resource to make the resource depend on the external policy. This dependency ensures that the role's policy is available throughout the resource's lifecycle. For example, when you delete a stack with an `AWS::ECS::Service` resource, the `DependsOn` attribute ensures that CloudFormation deletes the `AWS::ECS::Service` resource before deleting its role's policy.

- `users`: string | [IUserRef](/cdk/api/v2/docs/aws-cdk-lib.interfaces.aws_iam.IUserRef.html)[] — The name (friendly name, not ARN) of the IAM user to attach the policy to.

  This parameter allows (through its [regex pattern](https://docs.aws.amazon.com/http://wikipedia.org/wiki/regex) ) a string of characters consisting of upper and lowercase alphanumeric characters with no spaces. You can also include any of the following characters: _+=,.@-

## Properties

- `attrAttachmentCount`: number — The number of principal entities (users, groups, and roles) that the policy is attached to.

- `attrCreateDate`: string — The date and time, in [ISO 8601 date-time format](https://docs.aws.amazon.com/http://www.iso.org/iso/iso8601) , when the policy was created.

- `attrDefaultVersionId`: string — The identifier for the version of the policy that is set as the default (operative) version.

  For more information about policy versions, see [Versioning for managed policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/policies-managed-versions.html) in the *IAM User Guide* .

- `attrIsAttachable`: [IResolvable](/cdk/api/v2/docs/aws-cdk-lib.IResolvable.html) — Specifies whether the policy can be attached to an IAM user, group, or role.

- `attrPermissionsBoundaryUsageCount`: number — The number of entities (users and roles) for which the policy is used as the permissions boundary.

  For more information about permissions boundaries, see [Permissions boundaries for IAM identities](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_boundaries.html) in the *IAM User Guide* .

- `attrPolicyArn`: string — The Amazon Resource Name (ARN) of the managed policy that you want information about.

  For more information about ARNs, see [Amazon Resource Names (ARNs)](https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html) in the *AWS General Reference* .

- `attrPolicyId`: string — The stable and unique string identifying the policy.

  For more information about IDs, see [IAM identifiers](https://docs.aws.amazon.com/IAM/latest/UserGuide/Using_Identifiers.html) in the *IAM User Guide* .

- `attrUpdateDate`: string — The date and time, in [ISO 8601 date-time format](https://docs.aws.amazon.com/http://www.iso.org/iso/iso8601) , when the policy was last updated.

  When a policy has only one version, this field contains the date and time when the policy was created. When a policy has more than one version, this field contains the date and time when the most recent policy version was created.

- `CFN_RESOURCE_TYPE_NAME`: string (static) — The CloudFormation resource type name for this resource class.

- `cfnOptions`: [ICfnResourceOptions](/cdk/api/v2/docs/aws-cdk-lib.ICfnResourceOptions.html) — Options for this resource, such as condition, update policy etc.

- `cfnResourceType`: string — AWS resource type.

- `creationStack`: string[]

- `description`: string — A friendly description of the policy.

- `env`: [ResourceEnvironment](/cdk/api/v2/docs/aws-cdk-lib.interfaces.ResourceEnvironment.html)

- `groups`: string[] — The name (friendly name, not ARN) of the group to attach the policy to.

- `logicalId`: string — The logical ID for this CloudFormation stack element.

  The logical ID of the element
  is calculated from the path of the resource node in the construct tree.

  To override this value, use `overrideLogicalId(newLogicalId)`.

- `managedPolicyName`: string — The friendly name of the policy.

- `managedPolicyRef`: [ManagedPolicyReference](/cdk/api/v2/docs/aws-cdk-lib.interfaces.aws_iam.ManagedPolicyReference.html) — A reference to a ManagedPolicy resource.

- `node`: [Node](/cdk/api/v2/docs/constructs.Node.html) — The tree node.

- `path`: string — The path for the policy.

- `policyDocument`: any — The JSON policy document that you want to use as the content for the new policy.

- `ref`: string — Return a string that will be resolved to a CloudFormation `{ Ref }` for this element.

  If, by any chance, the intrinsic reference of a resource is not a string, you could
  coerce it to an IResolvable through `Lazy.any({ produce: resource.ref })`.

- `roles`: string[] — The name (friendly name, not ARN) of the role to attach the policy to.

- `stack`: [Stack](/cdk/api/v2/docs/aws-cdk-lib.Stack.html) — The stack in which this element is defined.

  CfnElements must be defined within a stack scope (directly or indirectly).

- `users`: string[] — The name (friendly name, not ARN) of the IAM user to attach the policy to.

## Methods

- `addDeletionOverride(path: string): void` — Syntactic sugar for `addOverride(path, undefined)`.

  **Parameters**

  - `path` — The path of the value to delete.

- `addDependency(target: CfnResource): void` — Use `addResourceDependency` instead.

  This method has been renamed to `addResourceDependency` to more clearly
  set it apart from `construct.node.addDependency`. See the documentation
  of that function for more details.

- `addDependsOn(target: CfnResource): void` — Use `addResourceDependency` instead.

  This can be used for resources across stacks (or nested stack) boundaries
  and the dependency will automatically be transferred to the relevant scope.

  This method has been renamed to `addResourceDependency`, which makes it
  more clear that this method operates at a different level from the
  construct-level `construct.node.addDependency()` mechanism.

- `addMetadata(key: string, value: any): void` — Add a value to the CloudFormation Resource Metadata.

- `addOverride(path: string, value: any): void` — Adds an override to the synthesized CloudFormation resource.

  To add a
  property override, either use `addPropertyOverride` or prefix `path` with
  "Properties." (i.e. `Properties.TopicName`).

  If the override is nested, separate each nested level using a dot (.) in the path parameter.
  If there is an array as part of the nesting, specify the index in the path.

  To include a literal `.` in the property name, prefix with a `\`. In most
  programming languages you will need to write this as `"\\."` because the
  `\` itself will need to be escaped.

  For example,
  ```typescript
  cfnResource.addOverride('Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes', ['myattribute']);
  cfnResource.addOverride('Properties.GlobalSecondaryIndexes.1.ProjectionType', 'INCLUDE');
  ```
  would add the overrides
  ```json
  "Properties": {
    "GlobalSecondaryIndexes": [
      {
        "Projection": {
          "NonKeyAttributes": [ "myattribute" ]
          ...
        }
        ...
      },
      {
        "ProjectionType": "INCLUDE"
        ...
      },
    ]
    ...
  }
  ```

  The `value` argument to `addOverride` will not be processed or translated
  in any way. Pass raw JSON values in here with the correct capitalization
  for CloudFormation. If you pass CDK classes or structs, they will be
  rendered with lowercased key names, and CloudFormation will reject the
  template.

  **Parameters**

  - `path` — - The path of the property, you can use dot notation to override values in complex types.
  - `value` — - The value.

- `addPropertyDeletionOverride(propertyPath: string): void` — Adds an override that deletes the value of a property from the resource definition.

  **Parameters**

  - `propertyPath` — The path to the property.

- `addPropertyOverride(propertyPath: string, value: any): void` — Adds an override to a resource property.

  Syntactic sugar for `addOverride("Properties.<...>", value)`.

  **Parameters**

  - `propertyPath` — The path of the property.
  - `value` — The value.

- `addResourceDependency(target: CfnResource, reason?: string): void` — Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.

  This can be used for resources across stacks (or nested stack) boundaries
  and the dependency will automatically be transferred to the relevant scope.

  This method only adds dependencies between L1 resources. If you are
  looking for a generic construct-to-construct dependency mechanism that works
  for all constructs including L2s, use `construct.node.addDependency` instead.

- `applyCrossStackReferenceStrength(strength: ReferenceStrength): void` — Sets the cross-stack reference strength for this resource.

  When set, any cross-stack reference to this resource will use the specified
  strength instead of the global default from the consuming stack's context.

  **Parameters**

  - `strength` — - The reference strength to use for this resource.

- `applyRemovalPolicy(policy?: RemovalPolicy, options?: RemovalPolicyOptions): void` — Sets the deletion policy of the resource based on the removal policy specified.

  The Removal Policy controls what happens to this resource when it stops
  being managed by CloudFormation, either because you've removed it from the
  CDK application or because you've made a change that requires the resource
  to be replaced.

  The resource can be deleted (`RemovalPolicy.DESTROY`), or left in your AWS
  account for data recovery and cleanup later (`RemovalPolicy.RETAIN`). In some
  cases, a snapshot can be taken of the resource prior to deletion
  (`RemovalPolicy.SNAPSHOT`). A list of resources that support this policy
  can be found in the following link:

- `cfnPropertyName(cdkPropertyName: string): string`

- `getAtt(attributeName: string, typeHint?: ResolutionTypeHint): Reference` — Returns a token for an runtime attribute of this resource.

  Ideally, use generated attribute accessors (e.g. `resource.arn`), but this can be used for future compatibility
  in case there is no generated attribute.

  **Parameters**

  - `attributeName` — The name of the attribute.

- `getMetadata(key: string): any` — Retrieve a value value from the CloudFormation Resource Metadata.

- `inspect(inspector: TreeInspector): void` — Examines the CloudFormation resource and discloses attributes.

  **Parameters**

  - `inspector` — tree inspector to collect and process attributes.

- `isCfnElement(x: any): boolean` (static) — Returns `true` if a construct is a stack element (i.e. part of the synthesized cloudformation template).

  Uses duck-typing instead of `instanceof` to allow stack elements from different
  versions of this library to be included in the same stack.

  **Returns:** The construct as a stack element or undefined if it is not a stack element.

- `isCfnManagedPolicy(x: any): boolean` (static) — Checks whether the given object is a CfnManagedPolicy.

- `isCfnResource(x: any): boolean` (static) — Check whether the given object is a CfnResource.

- `isConstruct(x: any): boolean` (static) — Checks if `x` is a construct.

  Use this method instead of `instanceof` to properly detect `Construct`
  instances, even when the construct library is symlinked.

  Explanation: in JavaScript, multiple copies of the `constructs` library on
  disk are seen as independent, completely different libraries. As a
  consequence, the class `Construct` in each copy of the `constructs` library
  is seen as a different class, and an instance of one class will not test as
  `instanceof` the other class. `npm install` will not create installations
  like this, but users may manually symlink construct libraries together or
  use a monorepo tool: in those cases, multiple copies of the `constructs`
  library can be accidentally installed, and `instanceof` will behave
  unpredictably. It is safest to avoid using `instanceof`, and using
  this type-testing method instead.

  **Parameters**

  - `x` — Any object.

  **Returns:** true if `x` is an object created from a class which extends `Construct`.

- `obtainDependencies(): Stack | CfnResource[]` — Retrieves an array of resources and stacks this resource depends on.

  For resources depended on directly, returns the `CfnResource` object. For
  dependencies on other stacks, returns the `Stack` object. The order of the
  array is not guaranteed.

- `overrideLogicalId(newLogicalId: string): void` — Overrides the auto-generated logical ID with a specific ID.

  **Parameters**

  - `newLogicalId` — The new logical ID to use for this stack element.

- `removeDependency(target: CfnResource): void` — Use `removeResourceDependency` instead

  This can be used for resources across stacks (including nested stacks)
  and the dependency will automatically be removed from the relevant scope.

- `removeResourceDependency(target: CfnResource): void` — Indicates that this resource no longer depends on another resource.

  This can be used for resources across stacks (including nested stacks)
  and the dependency will automatically be removed from the relevant scope.

- `replaceDependency(target: CfnResource, newTarget: CfnResource): void` — Replaces one dependency with another.

  **Parameters**

  - `target` — The dependency to replace.
  - `newTarget` — The new dependency to add.

- `toString(): string` — Returns a string representation of this construct.

  **Returns:** a string representation of this resource

- `with(...mixins: IMixin[]): IConstruct` — Applies one or more mixins to this construct.

  Mixins are applied in order. The list of constructs is captured at the
  start of the call, so constructs added by a mixin will not be visited.
  Use multiple `with()` calls if subsequent mixins should apply to added
  constructs.