Welcome to the Axon Manual!
Axon provides the Axon Framework and the Axon Server to help build applications centered on three core concepts - CQRS (Command Query Responsibility Segregation) / Event Sourcing and DDD (Domain Driven Design).
While many types of applications can be built using Axon, it has proven to be very popular for microservices architectures. Axon provides an innovative and powerful way of sensibly evolving to event-driven microservices within a microservices architecture.
Breaking Changes in Axon Framework 4.7!Against our normal approach towards minor releases, we sadly had to introduce breaking changes between Axon Framework 4.6 and 4.7. Our apologies for this.To help you with your upgrade we have constructed a dedicated page here that helps you on your path to upgrade to 4.7. If you find any irregularities concerning your upgrade, be sure to reach out to us!
The Reference Guide is split into 4 sections
The Axon platform consists of Axon Framework and Axon Server. It is provided by AxonIQ B.V. under the licenses described below.
- For Axon Server, licensing depends on the version.
- The standard version, called "Axon Server", is open source and free to download and use. It is provided under an AxonIQ-specific open source license. While this license allows you to run the software freely in any environment, it is less permissive than the Apache License. For instance, it doesn't allow you as a licensee to create a derivative work.
- The commercial version, called "Axon Server Enterprise", as well as the various "Packs", are closed source and provided under a commercial license agreement.