Before migrating, which change to the on-premises architecture should you make to meet business requirements?

Containerizing microservices and deploying them to GKE before migration is a strategic move for several reasons. It decouples applications from the underlying infrastructure, making them portable and easier to migrate to a cloud environment. GKE provides a managed, scalable, and resilient platform for running containerized workloads, aligning with modern cloud-native best practices and improving operational efficiency. This approach also facilitates continuous integration and continuous delivery (CI/CD) pipelines. Replacing RabbitMQ with Cloud Pub/Sub is a cloud-native refactoring step that typically happens during or after migration, not necessarily before. Downgrading MySQL is an unnecessary and potentially disruptive step; Cloud SQL supports various MySQL versions. Resizing on-prem VMs to match Compute Engine predefined machine types is not a prerequisite for migration and can be addressed during the migration process itself.