---
title: "Using an AWS microservice architecture for subscription management"
description: "Enterprise subscription management must handle mid-cycle plan changes, usage-based billing adjustments, synchronized service updates, atomicity, failed operations, data consistency, and auditability beyond basic recurring billing. This sample architecture uses an event-driven AWS design in which subscription changes are published to EventBridge and routed to Step Functions workflows. EventBridge provides at-least-once delivery, content-based filtering, dead-letter queue support, and integration with Step Functions, while Lambda functions validate changes, calculate Stripe proration, update external subscriptions, and trigger service-specific actions. Step Functions supplies retries with exponential backoff for StripeTemporaryError, DynamoDB stores current and historical subscription data using transactional updates, and Stripe calls use an event identifier as an idempotency key. The pattern is presented as a flexible foundation for reliability, maintainability, compensation for partial changes, and auditability in systems handling financial transactions and service provisioning."
---

# Using an AWS microservice architecture for subscription management

[Stripe](https://yomu.fyi/company/stripe) · James Beswick · Apr 8, 2025

**Type:** Explainer

## Summary

Enterprise subscription management must handle mid-cycle plan changes, usage-based billing adjustments, synchronized service updates, atomicity, failed operations, data consistency, and auditability beyond basic recurring billing. This sample architecture uses an event-driven AWS design in which subscription changes are published to EventBridge and routed to Step Functions workflows. EventBridge provides at-least-once delivery, content-based filtering, dead-letter queue support, and integration with Step Functions, while Lambda functions validate changes, calculate Stripe proration, update external subscriptions, and trigger service-specific actions. Step Functions supplies retries with exponential backoff for StripeTemporaryError, DynamoDB stores current and historical subscription data using transactional updates, and Stripe calls use an event identifier as an idempotency key. The pattern is presented as a flexible foundation for reliability, maintainability, compensation for partial changes, and auditability in systems handling financial transactions and service provisioning.

## Context

Enterprise subscription management involves more than recurring billing: mid-cycle plan changes can require prorated charges, entitlement updates across services, atomic processing, graceful failure handling, data consistency, and auditability. The post contrasts these requirements with traditional monolithic approaches that may bury complex state management in a single application.

## Approach / What changed

The architecture publishes subscription-change events to Amazon EventBridge, routes them to AWS Step Functions workflows, and uses AWS Lambda for validation, Stripe integration, proration calculation, and service-specific updates. Amazon DynamoDB stores current and historical subscription records, including transactional updates, while retries, dead-letter queues, compensation workflows, logging, execution history, and Stripe idempotency support failure handling and consistency.

## Takeaways

- EventBridge routes SubscriptionUpdate events by attributes such as detail-type, source, and operation, allowing upgrade and downgrade events to reach the appropriate Step Functions workflow.
- The example Step Functions retry policy catches StripeTemporaryError, retries up to three times with a one-second initial interval and a 2.0 backoff rate, and distinguishes transient failures from permanent validation errors.
- The DynamoDB model uses PK values such as SUB#sub\_123 with current and historical sort-key records; a transaction updates current state and writes a history record together.

**Tags:** [Architecture](https://yomu.fyi/topic/architecture), [AWS](https://yomu.fyi/topic/aws), [Microservices](https://yomu.fyi/topic/microservices), [Reliability](https://yomu.fyi/topic/reliability), [Serverless](https://yomu.fyi/topic/serverless)

- Source: [Stripe](https://stripe.dev/blog/aws-microservice-architecture-subscription-management)
- Source URL: https://stripe.dev/blog/aws-microservice-architecture-subscription-management
- Ingested by Yomu: 2026-08-28T08:58:26.128Z

[Read original post](https://stripe.dev/blog/aws-microservice-architecture-subscription-management)