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==== Provisioning Engines

The main role of _Provisioning Engines_ is to keep Identity Stores synchronized as much as possible.

Some other characteristics and features provided:

* Adapt to Identity Store data and application models
* Do not require changes in Identity Stores or applications
* Build virtual unified view of identity data distributed across several Identity Stores
* Allow to define and enforce security policies
* Permit workflow definition, with transitions subject to approval
* Focused on application back-end

In brief, provisioning engines take heterogeneous Identity Stores (and business requirements) as input and build up
high-level identity data management throughout what is called the *Identity Lifecycle*.

[.text-center]
image::identityLifecycle.png[title="Identity Lifecycle",alt="Identity Lifecycle",width="505",height="324"]

[NOTE]
====
From a technology point of view, *Apache Syncope* is primarily a *Provisioning Engine*.
====
