Document history

The following table describes significant changes to this guide. If you want to be notified about future updates, you can subscribe to an RSS feed.

Change	Description	Date
Clarifications	We clarified some of the informnation for the database-per-service and shared-database-per-service patterns.	April 7, 2025
Updated pattern	We updated the Amazon EventBridge implementation section of the event sourcing pattern.	December 4, 2023
Expanded section	We updated the CQRS pattern with more information.	November 17, 2023
Added a link for implementing the saga pattern with Step Functions	We updated the Home and Saga pattern sections with the link to the pattern Implement the serverless saga pattern by using AWS Step Functions from the AWS Prescriptive Guidance website.	February 23, 2021
Initial publication	—	January 27, 2021

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