1. Understand Business Objectives

• Align with stakeholders: Clearly identify the reasons for migration, such as cost savings, performance improvements, or leveraging specific GCP services like BigQuery or AI/ML tools.
• Define success metrics: Establish KPIs to measure migration success, including system performance, cost implications, and end-user experience.

2. Analyze Existing Architecture

• Inventory assessment: Map out all AWS services, integrations, and dependencies currently in use for Pega Cloud. These include databases, storage, VPCs, IAM roles, and load balancers.
• Application dependencies: Identify any hard-coded AWS-specific configurations or dependencies in your Pega Cloud applications.
• Microservices and Kubernetes: If the Pega environment uses Kubernetes (e.g., in Pega Cloud 3), evaluate how the container orchestration setup aligns with GCP's Google Kubernetes Engine (GKE).

3. Compatibility and Configuration in GCP

• Storage migration: AWS S3 buckets must be mapped to GCP's Cloud Storage, ensuring access control policies and encryption standards are replicated.
• Database migration: Transitioning from AWS RDS to Google Cloud SQL or another GCP database option requires schema export/import and data consistency checks.
• Networking: Replicate VPC configurations, VPNs, and firewall rules in GCP. Evaluate GCP-specific networking features like Cloud Load Balancing and inter-region routing.
• IAM and Security: Translate AWS IAM roles and policies into GCP’s IAM model. Audit security controls and ensure compliance with standards like HIPAA, if applicable.

4. Plan for Data Migration

• Assess data volumes: For large datasets, consider transfer tools like Google Transfer Appliance or AWS Direct Connect for exporting and importing data.
• Minimize downtime: Use strategies like database replication and incremental data transfers to reduce service interruptions during migration.
• Data validation: Ensure data integrity post-migration by running checksums and performing application-level tests.

5. Application Modernization Opportunities

• Technical debt: Address any existing inefficiencies in the application, such as unused indexes or redundant features, before the migration.
• Leverage GCP services: Explore GCP-native offerings like BigQuery for analytics, Cloud Pub/Sub for messaging, or AI/ML APIs for enhanced functionality.
• Constellation UI updates: If using Pega Constellation, ensure it works seamlessly with GCP infrastructure and modernize the UI as needed.

6. Testing and Validation

• Environment setup: Create staging environments in GCP that replicate your AWS setup.
• Performance benchmarking: Measure system performance pre- and post-migration to ensure parity or improvement.
• End-to-end testing: Test all integrations, case workflows, and background jobs within the migrated environment.

7. Monitoring and Optimization

• Set up monitoring tools: Use GCP's Cloud Monitoring and Logging to replace or complement AWS tools like CloudWatch.
• Optimize costs: Analyze usage patterns to leverage GCP's pricing models, including committed use discounts and preemptible VMs.
• Scaling policies: Review autoscaling configurations to ensure seamless scalability in GCP.

8. Build a Cross-Functional Team

• Cloud architects: Experts in both AWS and GCP to design the migration architecture.
• Pega specialists: To handle application-specific configurations and ensure compliance with Pega best practices.
• Database administrators: For data migration and optimization tasks.
• Security and compliance teams: To ensure data and application compliance with regulatory standards during and after migration.

9. Post-Migration Steps

• Decommission AWS resources: Once the migration is validated, shut down AWS services to avoid unnecessary costs.
• Knowledge transfer: Train teams on GCP-specific tools and workflows.
• Monitor performance: Continuously monitor the application to identify and resolve any issues arising in the new environment.