> For the complete documentation index, see [llms.txt](https://docs.ecotone.tech/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ecotone.tech/messaging/messaging-concepts.md).

# Messaging concepts

Ecotone is built on a small set of messaging primitives drawn from [Enterprise Integration Patterns](https://www.enterpriseintegrationpatterns.com/). Higher-level features like Command/Event/Query buses, Aggregates, Sagas, and Projections are all composed from these building blocks.

If you have used Symfony Messenger or Laravel Queues, the mapping is roughly: a **Message** is the envelope you dispatch, a **Channel** is the transport (queue, in-memory, broker), an **Endpoint/Handler** is the code that processes the message, and a **Gateway** is the typed interface you call to send it.

{% content-ref url="/pages/-LwhsETO-LK-lIFYfQaN" %}
[Message](/messaging/messaging-concepts/message.md)
{% endcontent-ref %}

{% content-ref url="/pages/-LwhsdVFXtDs4bqRr4w1" %}
[Message Channel](/messaging/messaging-concepts/message-channel.md)
{% endcontent-ref %}

{% content-ref url="/pages/-LwJfOPi0OKWs5SCKm7r" %}
[Message Endpoints/Handlers](/messaging/messaging-concepts/message-endpoint.md)
{% endcontent-ref %}

{% content-ref url="/pages/-M3NHe4spQAgGRiqowAY" %}
[Consumer](/messaging/messaging-concepts/consumer.md)
{% endcontent-ref %}

{% content-ref url="/pages/-LwhtSYhgD4TE4lcvMhv" %}
[Messaging Gateway](/messaging/messaging-concepts/messaging-gateway.md)
{% endcontent-ref %}

{% content-ref url="/pages/xd0i4EAq0nyDiiHg2bq6" %}
[Inbound/Outbound Channel Adapter](/messaging/messaging-concepts/inbound-outbound-channel-adapter.md)
{% endcontent-ref %}


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