Build multi-step applications and AI workflows with AWS Lambda durable functions

This article announces AWS Lambda durable functions, a new feature enabling reliable multi-step applications and AI workflows with automatic state management and failure recovery.

• Build complex, long-running workflows directly in Lambda without external orchestration services
• Automatic checkpointing, retries, and suspension without compute charges during waits
• Core primitives: "steps" for automatic retries and "waits" for efficient suspension
• Supports callbacks for external approvals and human decisions
• Built-in idempotency prevents duplicate executions with same execution name
• Monitor executions via Lambda console or Amazon EventBridge integration
• Currently available in US East (Ohio); supports Node.js 22/24 and Python 3.13/3.14
• Open source SDKs available for JavaScript/TypeScript and Python

Lambda durable functions simplify building production-ready workflows like order processing, payment coordination, and AI agent orchestration with built-in resilience and cost efficiency.