CF template to deploy an Amazon DynamoDB Table. The table should have a composite primary key, and one index of your choice. Explicitly define a scaling policy for the Table

cf-dynamodb.yaml

AWSTemplateFormatVersion: 2010-09-09
Resources:
  OrdersTable:
    Type: "AWS::DynamoDB::Table"
    Properties:
      TableName: AuthorsTable
      AttributeDefinitions:
        - AttributeName: AuthorName
          AttributeType: S
        - AttributeName: BookTitle
          AttributeType: S
        - AttributeName: Year
          AttributeType: "N"
      KeySchema:
        - AttributeName: AuthorName
          KeyType: HASH
        - AttributeName: BookTitle
          KeyType: RANGE
      TimeToLiveSpecification:
        AttributeName: ExpirationTime
        Enabled: true
      ProvisionedThroughput:
        ReadCapacityUnits: "10"
        WriteCapacityUnits: "5"
      LocalSecondaryIndexes:
        - IndexName: "LSI"
          KeySchema:
            - AttributeName: "BookTitle"
              KeyType: "HASH"
            - AttributeName: "Year"
              KeyType: "RANGE"
          Projection:
            NonKeyAttributes:
              - "AuthorName"
            ProjectionType: "INCLUDE"
    DependsOn:
      - DynamoDBQueryPolicy
  MyTableWriteCapacityScalableTarget: 
    Type: "AWS::ApplicationAutoScaling::ScalableTarget"
    Properties: 
      MaxCapacity: 100
      MinCapacity: 5   
      ResourceId: !Sub table/${myTableName}
      RoleARN: !Sub arn:aws:iam::${AWS::AccountId}:role/aws-service-role/dynamodb.application-autoscaling.amazonaws.com/AWSServiceRoleForApplicationAutoScaling_DynamoDBTable
      ScalableDimension: "dynamodb:table:WriteCapacityUnits"
      ServiceNamespace: dynamodb
      DependsON: AuthorsTable    
  MyTableWriteScalingPolicy: 
    Type: "AWS::ApplicationAutoScaling::ScalingPolicy"
    Properties: 
      PolicyName: WriteAutoScalingPolicy
      PolicyType: TargetTrackingScaling
      ScalingTargetId: 
      Ref: UserTableWriteCapacityScalableTarget
      TargetTrackingScalingPolicyConfiguration: 
      TargetValue: 70
      ScaleInCooldown: 60
      ScaleOutCooldown: 60
      PredefinedMetricSpecification: 
      PredefinedMetricType: DynamoDBWriteCapacityUtilization
  DynamoDBQueryPolicy:
    Type: "AWS::IAM::Policy"
    Properties:
      PolicyName: DynamoDBQueryPolicy
      PolicyDocument:
        Version: 2012-10-17
        Statement:
          - Effect: Allow
            Action: "dynamodb:Query"
            Resource: "*"
      Roles:
        - Ref: OrdersTableQueryRole
  OrdersTableQueryRole:
    Type: "AWS::IAM::Role"
    Properties:
      AssumeRolePolicyDocument:
        Version: 2012-10-17
        Statement:
          - Effect: Allow
            Principal:
              Service:
                - dynamodb.amazonaws.com
            Action:
              - "sts:AssumeRole"
      Path: /