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Architecture Corner · Aug 27, 2025 · 5 min

EventCatalog: Building Documentation for Event-Driven Systems

Architecture Corner Newsletter Podcast explores the tools and practices that make complex software architectures more manageable and maintainable. Event-driven applications often struggle with scattered documentation and poor discoverability of their messaging contracts. EventCatalog emerges as an open-source solution that brings order to this complexity through a documentation-as-code approach. In this episode we will cover: The challenges of documenting both synchronous APIs and asynchronous messaging in modern applications How EventCatalog organizes domains, services, and messages using a structured file-based approach Setting up your first event catalog with commands, events, and queries Integrating schema definitions from OpenAPI, AsyncAPI, JSON, and Avro formats Managing teams, users, and ownership information within your documentation Incorporating Domain-Driven Design concepts like ubiquitous language and entities Real-world examples of multi-domain architectures with eCommerce and Fulfillment systems For more details check ⁠here. If you are interested in more information about software development and architecture, subscribe for free to our ⁠newsletter⁠. --- https://architecturecorner.substack.com

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Architecture Corner Newsletter Podcast explores the tools and practices that make complex software architectures more manageable and maintainable.

Event-driven applications often struggle with scattered documentation and poor discoverability of their messaging contracts. EventCatalog emerges as an open-source solution that brings order to this complexity through a documentation-as-code approach.


In this episode we will cover:

  • The challenges of documenting both synchronous APIs and asynchronous messaging in modern applications
  • How EventCatalog organizes domains, services, and messages using a structured file-based approach
  • Setting up your first event catalog with commands, events, and queries
  • Integrating schema definitions from OpenAPI, AsyncAPI, JSON, and Avro formats
  • Managing teams, users, and ownership information within your documentation
  • Incorporating Domain-Driven Design concepts like ubiquitous language and entities
  • Real-world examples of multi-domain architectures with eCommerce and Fulfillment systems


For more details check ⁠here.

If you are interested in more information about software development and architecture, subscribe for free to our ⁠newsletter⁠.

---

https://architecturecorner.substack.com

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