aws-backup-cloudformation-template.yaml

AWSTemplateFormatVersion: '2010-09-09'
Description: AWS Backup daily CloudFormation configuration
Resources:
  BackupPlan:
    Type: AWS::Backup::BackupPlan
    Properties:
      BackupPlan:
        BackupPlanName: default
        BackupPlanRule:
          - RuleName: daily-backups
            TargetBackupVault: !Ref 'BackupVault'
            ScheduleExpression: cron(0 5 ? * * *)
            StartWindowMinutes: 60
            Lifecycle:
              DeleteAfterDays: 60

  BackupVault:
    Type: AWS::Backup::BackupVault
    Properties:
      BackupVaultName: default
      EncryptionKeyArn: !GetAtt BackupVaultKey.Arn

  BackupVaultKey:
    Type: AWS::KMS::Key
    Properties:
      Description: Encryption key for daily
      Enabled: true
      KeyPolicy:
        Version: '2012-10-17'
        Statement:
          - Effect: Allow
            Principal:
              AWS: !Sub 'arn:${AWS::Partition}:iam::${AWS::AccountId}:root'
            Action:
              - kms:*
            Resource: '*'

  BackupVaultKeyAlias:
    Type: AWS::KMS::Alias
    Properties:
      AliasName: alias/cmk/backup
      TargetKeyId: !Ref 'BackupVaultKey'

  BackupRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Effect: Allow
            Principal:
              Service:
                - backup.amazonaws.com
            Action:
              - sts:AssumeRole
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/service-role/AWSBackupServiceRolePolicyForBackup

  BackupSelection:
    Type: AWS::Backup::BackupSelection
    Properties:
      BackupSelection:
        SelectionName: daily-backup-tag
        IamRoleArn: !GetAtt 'BackupRole.Arn'
        ListOfTags:
          - ConditionType: STRINGEQUALS
            ConditionKey: backup
            ConditionValue: daily
      BackupPlanId: !Ref 'BackupPlan'

Thanks!