CloudFormation で Cognito ref: http://qiita.com/y13i/items/1923b47079bdf7c44eec

file0.yml

AWSTemplateFormatVersion: "2010-09-09"
Description: "Example template including Cognito Identity Pool and User Pool."
Parameters:
  EmailIdentityArn:
    Type: String
Resources:
  UserPool:
    Type: AWS::Cognito::UserPool
    Properties:
      UserPoolName: 
        Fn::Join:
          - ""
          - - Ref: AWS::StackName
            - Users
      AdminCreateUserConfig:
        AllowAdminCreateUserOnly: false
      AliasAttributes:
      - email
      - preferred_username
      AutoVerifiedAttributes:
      - email
      EmailConfiguration:
        SourceArn:
          Ref: EmailIdentityArn
      Policies:
        PasswordPolicy:
          MinimumLength: 8
          RequireLowercase: true
          RequireNumbers: true
          RequireSymbols: false
          RequireUppercase: true
      Schema:
      - Name: email
        AttributeDataType: String
        DeveloperOnlyAttribute: false
        Mutable: true
        Required: true
      - Name: preferred_username
        AttributeDataType: String
        DeveloperOnlyAttribute: false
        Mutable: true
        Required: false
  UserPoolClient:
    Type: AWS::Cognito::UserPoolClient
    Properties:
      ClientName: 
        Fn::Join:
          - ""
          - - Ref: AWS::StackName
            - Users-client
      GenerateSecret: false
      RefreshTokenValidity: 7
      UserPoolId:
        Ref: UserPool
  IdentityPool:
    Type: AWS::Cognito::IdentityPool
    Properties:
      AllowUnauthenticatedIdentities: true
      IdentityPoolName: 
        Fn::Join:
          - ""
          - - Ref: AWS::StackName
            - Users
      CognitoIdentityProviders:
      - ClientId:
          Ref: UserPoolClient
        ProviderName:
          Fn::Join:
          - ""
          - - cognito-idp.
            - Ref: "AWS::Region"
            - .amazonaws.com/
            - Ref: UserPool
  UnauthenticatedPolicy:
    Type: AWS::IAM::ManagedPolicy
    Properties:
      PolicyDocument:
        Version: "2012-10-17"
        Statement:
        - Effect: Allow
          Action:
          - mobileanalytics:PutEvents
          - cognito-sync:*
          Resource:
          - "*"
  UnauthenticatedRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: "2012-10-17"
        Statement:
        - Effect: Allow
          Action: "sts:AssumeRoleWithWebIdentity"
          Principal:
            Federated: cognito-identity.amazonaws.com
          Condition:
            StringEquals:
              "cognito-identity.amazonaws.com:aud":
                Ref: IdentityPool
            ForAnyValue:StringLike:
              "cognito-identity.amazonaws.com:amr": unauthenticated
      ManagedPolicyArns:
      - Ref: UnauthenticatedPolicy
  AuthenticatedPolicy:
    Type: AWS::IAM::ManagedPolicy
    Properties:
      PolicyDocument:
        Version: "2012-10-17"
        Statement:
        - Effect: Allow
          Action:
          - mobileanalytics:PutEvents
          - cognito-sync:*
          - cognito-identity:*
          Resource:
          - "*"
  AuthenticatedRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: "2012-10-17"
        Statement:
        - Effect: Allow
          Action: "sts:AssumeRoleWithWebIdentity"
          Principal:
            Federated: cognito-identity.amazonaws.com
          Condition:
            StringEquals:
              "cognito-identity.amazonaws.com:aud":
                Ref: IdentityPool
            ForAnyValue:StringLike:
              "cognito-identity.amazonaws.com:amr": authenticated
      ManagedPolicyArns:
      - Ref: AuthenticatedPolicy
  RoleAttachment:
    Type: AWS::Cognito::IdentityPoolRoleAttachment
    Properties:
      IdentityPoolId:
        Ref: IdentityPool
      Roles:
        unauthenticated:
          Fn::GetAtt:
          - UnauthenticatedRole
          - Arn
        authenticated:
          Fn::GetAtt:
          - AuthenticatedRole
          - Arn
Outputs:
  UserPool:
    Value:
      Ref: UserPool
  UserPoolClient:
    Value:
      Ref: UserPoolClient
  IdentityPool:
    Value:
      Ref: IdentityPool
  UnauthenticatedRole:
    Value:
      Ref: UnauthenticatedRole
  AuthenticatedRole:
    Value:
      Ref: AuthenticatedRole