# How is done the communication between NLU and CORE?

**URL:** <https://forum.rasa.com/t/how-is-done-the-communication-between-nlu-and-core/23423>\
**Category:** Rasa Open Source\
**Created:** [January 13, 2020, 9:11am UTC](https://forum.rasa.com/t/how-is-done-the-communication-between-nlu-and-core/23423 "2020-01-13T09:11:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Eomer](https://avatars.discourse-cdn.com/v4/letter/e/f17d59/32.png) [@Eomer](https://forum.rasa.com/u/Eomer)\
**Post date:** [January 13, 2020, 9:11am UTC](https://forum.rasa.com/t/how-is-done-the-communication-between-nlu-and-core/23423/1 "2020-01-13T09:11:50Z")

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Hello! I need to document a chatbot creation, but I don’t know how to comunication between NLU and CORE is done. Is there any type of “Broker” or “Orchestrator” element?

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**Author:** ![priya359](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/priya359/32/6464_2.png) [@priya359](https://forum.rasa.com/u/priya359)\
**Post date:** [January 13, 2020, 11:38am UTC](https://forum.rasa.com/t/how-is-done-the-communication-between-nlu-and-core/23423/2 "2020-01-13T11:38:15Z")

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@Eomer you can read this

> **[A Chatbot from Future: Building an end-to-end Conversational Assistant with Rasa](https://towardsdatascience.com/a-chatbot-from-future-building-an-end-to-end-conversational-assistant-with-rasa-ai-51a1c93dabf2)**
>
> You might have seen in my previous post that I’ve been using Rasa to build chatbots. You will find many tutorials on Rasa that are using…