Replace static RegionMap

template.yaml

@@ -147,6 +147,10 @@ Parameters:
     ConstraintDescription: 'Must be in the range [0-8]'
     MinValue: 0
     MaxValue: 8
+  LatestAmiId:
+    Description: 'The Parameter Store Prefix and AMI name alias to Query the latest Amazon Linux AMI from AWS Systems Manager Parameter Store'
+    Type: 'AWS::SSM::Parameter::Value<AWS::EC2::Image::Id>'
+    Default: '/aws/service/ami-amazon-linux-latest/amzn2-ami-hvm-x86_64-gp2'
 Conditions:
   HasSSHBastionSecurityGroup: !Not [!Equals [!Ref ParentSSHBastionStack, '']]
   HasKeyName: !Not [!Equals [!Ref KeyName, '']]
@@ -157,48 +161,6 @@ Conditions:
   HasTagFiles: !Equals [!Ref TagFiles, 'true']
   HasSpotPrice: !Not [!Equals [!Ref SpotPrice, '']]
   HasSwapSize: !Not [!Equals [!Ref SwapSize, '0']]
-Mappings:
-  RegionMap:
-    'af-south-1':
-      AMI: 'ami-0cec12e29ebe3f0d5'
-    'eu-north-1':
-      AMI: 'ami-0653812935d0743fe'
-    'ap-south-1':
-      AMI: 'ami-0e306788ff2473ccb'
-    'eu-west-3':
-      AMI: 'ami-0de12f76efe134f2f'
-    'eu-west-2':
-      AMI: 'ami-0a669382ea0feb73a'
-    'eu-south-1':
-      AMI: 'ami-0759301b88845d121'
-    'eu-west-1':
-      AMI: 'ami-0bb3fad3c0286ebd5'
-    'ap-northeast-2':
-      AMI: 'ami-03b42693dc6a7dc35'
-    'me-south-1':
-      AMI: 'ami-08155c9ee8b845e35'
-    'ap-northeast-1':
-      AMI: 'ami-0ce107ae7af2e92b5'
-    'sa-east-1':
-      AMI: 'ami-02898a1921d38a50b'
-    'ca-central-1':
-      AMI: 'ami-0c2f25c1f66a1ff4d'
-    'ap-east-1':
-      AMI: 'ami-814d0ff0'
-    'ap-southeast-1':
-      AMI: 'ami-015a6758451df3cb9'
-    'ap-southeast-2':
-      AMI: 'ami-0f96495a064477ffb'
-    'eu-central-1':
-      AMI: 'ami-00a205cb8e06c3c4e'
-    'us-east-1':
-      AMI: 'ami-0947d2ba12ee1ff75'
-    'us-east-2':
-      AMI: 'ami-03657b56516ab7912'
-    'us-west-1':
-      AMI: 'ami-0e4035ae3f70c400f'
-    'us-west-2':
-      AMI: 'ami-0528a5175983e7f28'
 Resources:
   FindingsTopic:
     Type: 'AWS::SNS::Topic'
@@ -1053,7 +1015,7 @@ Resources:
             Encrypted: true
         IamInstanceProfile:
           Name: !Ref ScanInstanceProfile
-        ImageId: !FindInMap [RegionMap, !Ref 'AWS::Region', AMI]
+        ImageId: !Ref LatestAmiId
         InstanceMarketOptions: !If
         - HasSpotPrice
         - MarketType: spot