.. _what-compositions-are:

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What compositions are?
======================

 

Concept
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**Composition** is an object that behaves as a container for your application and contain all its versions in the only place. Application inside compositions lays within a Docker container and can be easily deployed on multiple edge devices, using a Dockerfile (.yml).

You can imagine that a composition is a **version control for a single Docker application**, where you can create, update, delete versions, add comments under each change, and be able to rollback to any previous version of your application.

Compositions can be found under the **Compositions** tab sidebar, as shown below.

.. image:: images/cm-compositions-in-sidebar.png
    :height: 500px
    :alt: Compositions in sidebar
    :align: center