Integrating Lambda Durable Functions into a Step Functions Workflow

Short summary

A practical walkthrough of integrating AWS Lambda Durable Functions with Step Functions, covering the required CDK configuration, IAM policies, version/alias setup, and gotchas like resource replacement. Durable functions enable Lambda executions up to one year via checkpoint/replay, and AWS recommends combining them with Step Functions for hybrid architectures. The article shares real errors encountered and production-ready patterns.

• •Durable Functions add checkpoint/replay to Lambda for long-running executions
• •Adding durable_config triggers Lambda resource replacement in CDK
• •Hybrid pattern uses durable functions for app logic and Step Functions for high-level orchestration

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