Mobile Form enables LiveCycle XFA forms on mobile devices. It does it by rendering XFA Form to Html5 document.
As per Sling website, Apache Sling is a web framework that uses a Java Content Repository, such as Apache Jackrabbit, to store and manage content. Sling applications use either scripts or Java servlets, selected based on simple name conventions, to process HTTP requests in a RESTful way.
Mobile Form has a service that generates HTML snippet from XFA form. That html snippet, along with the xfaform css and js, can be embedded into any web page.
To know how to do this, read the complete post here.