Compliance Automation Architecture

Implementation Details

The framework was built using AWS Config, Lambda, and Step Functions, with the following workflow:

1. CloudTrail/VPC Flow Logs

Raw data sources tracking all API calls and network traffic:

Example Event: s3:PutBucketPolicy API call
Security Check: SSH attempt from unexpected IP (203.0.113.42)

2. AWS Config Rules

Predefined and custom rules for compliance evaluation:

def evaluate_compliance(config_item):
    # Check if EC2 has termination protection
    if config_item['resourceType'] == 'AWS::EC2::Instance':
        return config_item['configuration']['disableApiTermination']
    return 'NON_COMPLIANT'

3. Lambda Evaluator

Custom business logic processing:

if event['configRuleName'] == 's3-encryption-check':
    if bucket_config['ServerSideEncryption'] == 'AES256':
        return 'COMPLIANT'
    trigger_remediation()

4. Remediation Workflow

Step Functions state machine handles complex fixes:

Auto-enable S3 bucket encryption
Revoke permissive IAM policies
Isolate non-compliant resources

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