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All skills, like web or mobile applications, contain two parts: Interaction Model (the frontend) and the Hosted Service (the backend).

  • Interaction Model (frontend) — Much like the graphical user interface (appearance) of a mobile app, Alexa skills need a Voice User Interface (VUI). We’ll refer to the VUI as the interaction model — it defines what functionalities or behaviors the skill is able to handle.
  • Hosted Service (backend) — The programming logic, hosted on the internet, that responds to a user’s requests.

In this lesson, we will walk you through the steps to build a basic interaction model. Let’s start with intents and utterances.


The diagram to the right displays the relationship between the interaction model and the hosted service.

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