Scenarios

Purpose & Objectives

Why are you doing this? What are you aiming for?

You want to describe your end goal of the product or system. A scenario is showing an example of a typical interaction between a user and the system.

Data Sources

Where do you find the knowledge or input needed to do it?

The data source is similar to data source of a persona. It is a mix of imagination and data derived from interviews, observations and surveys. The persona can be a data source as well.

Procedure

How do you do it? Which techniques or tools do you use?

One should focus on answering the main questions regarding user interaction:

What is being done?
How is it being done? 
Why is it being done?

You do this by creating a story board with pictures and additional descriptions if necessary. A good starting point is to write a short story (text or bullet points) in natural and easy language.

Outcomes / Results

What do you get once you have done it?

A clear vision of the desired outcome for every stakeholder.