Challenges & Solutions
Challenges
- Employee PII requires strict access control and GDPR compliance
- Payroll processing must have 100% accuracy and zero downtime
- Integration with dozens of existing HR and finance systems
- Talent analytics needs ML but employee data cannot be misused
- Seasonal hiring spikes need elastic infrastructure during recruitment
CloudFormation Solves
- Lake Formation column-level PII access controls enforced by policy
- Multi-AZ Aurora + SQS FIFO for accurate atomic payroll processing
- API Gateway + EventBridge for real-time HR system integrations
- De-identified datasets for talent analytics in separate S3 bucket
- ECS auto-scaling for candidate application portal during hiring peaks
Architecture Patterns
HRIS Core Platform
Aurora PostgreSQL multi-AZ for employee records. ElastiCache for org chart and reporting line caching. KMS encryption for all PII. CloudTrail for GDPR audit trail.
Payroll Processing Engine
SQS FIFO for ordered payroll calculation jobs. Lambda for tax calculation microservices. Aurora with row-level locking for atomic balance updates. SNS for payslip delivery.
Talent Acquisition Platform
ECS auto-scaling career portal. Textract for CV parsing. Comprehend for skill extraction. SageMaker for candidate ranking model. SNS for application status notifications.
Workforce Analytics
Redshift for workforce metrics. Glue for SAP/Workday data integration. De-identified Athena queries for talent analytics. QuickSight for HR executive dashboards.
Business Outcomes
Supported Providers
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