Axon provides a unified, productive way of developing Java applications that can evolve without significant refactoring from a monolith to Event-Driven microservices. Axon includes both a programming model as well as specialized infrastructure to provide enterprise ready operational support for the programming model - especially for scaling and distributing mission critical business applications. The programming model is provided by the popular Axon Framework while Axon Server is the infrastructure part of Axon. Both the Axon Framework and Axon Server are open source. Axon is founded upon the well-established and proven concepts of CQRS (Command Query Responsibility Segregation) and Event Sourcing.
Simple, unified, enterprise-ready infrastructure for scaling and distributing CQRS and Event Sourcing focused Event-Driven microservices applications written using the Axon Framework.
End-to-end development and infrastructure platform for smoothly evolving Event-Driven microservices focused on CQRS and Event Sourcing.
The free version of Axon supports infrastructure needs to the extent that is appropriate for basic deployments of application. This is certainly true of evaluation, development, testing and small, non mission critical deployment of Axon applications. Specifically Axon Server supports purpose-built event storage, routing, manual scaling of tracking processors, event store queries, basic monitoring, basic security and basic messaging interoperability. Axon Enterprise is targeted towards mission-critical, medium to large scale production deployments of Axon. Features include clustering, advanced monitoring, advanced metrics, advanced security, higher performance storage, higher performance routing, automatic scaling, multi-context support and advanced messaging interoperability. Axon Enterprise and the feature packs are not open source.
Axon Enterprise is targeted towards mission-critical, medium to large scale production deployments and supports functionality needed in all deployments. For a specific situations you can choose one of the additional packs
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