This is a three-part series about using Domain-Driven Design (DDD) to implement Aggregates. Clustering Entities and Value Objects into an Aggregate with a carefully crafted consistency boundary may at first seem like quick work, but among all DDD tactical guidance, this pattern is one of the least well understood. This essay is the basis for Chapter 10 of my book, Implementing Domain-Driven Design.
The documents are available for download as three PDFs and are licensed under the Creative Commons Attribution-NoDerivs 3.0 Unported License.
A few days before writing this post, I shared my thoughts about this topic on X/Twitter, LinkedIn, and Mastodon. The top engagement