## MMI Versions

The MMI API supporting versioning of interfaces, and will support several versions back.
The MMI will be responsible for providing proper request processing corresponding to the requested version of the API. 

### How Versioning Works

A client may discover the version(s) supported by the MMI (on a given system) using the [/versions](#versions) interface.   The API version will be changed whenever any interface changes regardless of the scope of change.  This includes:

  * A new API family is added
  * A new interface is added to a family
  * the specification for any interface has changed 

The API version can and may differ or diverge from the product version.  
