Bridging AWS islands: cross-partition serverless solutions on EUSC

AWS European Sovereign Cloud is a separate partition, not just another region. That means separate everything. So what if your workloads need to live in both partitions: Standard and EUSC?

Let’s explore cross-partition serverless integration patterns using AWS CDK. We’ll dive into making EventBridge, Lambda, and DynamoDB work across the partition boundary.

We’ll also see how IAM Roles Anywhere replaces static credentials for cross-partition authentication, and how Lambda bridge functions relay events between EventBridge buses across partitions. All built as reusable CDK constructs, with a live demo of custom events flying across partitions.

Expect working code, honest trade-offs, and patterns you can take home.