Identify what the business goal is for building software.
Increase repeat sales to existing customers by 50% over the next 12 months
From the business goal, derive the scope of the feature(s)
As a marketing manager
I want customers to register personal details by join gin a VIP program
In order to be able to do direct marketing of products to existing customers
As a marketing manager
I want the system to offer **free delivery** on certain items to VIP customers
In order to entice existing customers to register for the VIP program
As an existing customer
I want to receive information on available special offers
In order to save money
With the business owner, product owner, developers, and tester create key examples that describe feature. The below builds off from story #2. In these key examples we are coming to an agreement on what we mean by free delivery.
VIP customer with five books in the cart gets free delivery
VIP customer with four books in the cart doesn't get free delivery.
Refine the specification using the key examples. This document should be self-explanatory and formatted in a way that will make it easy to automate.
Free delivery is offered to VIP customers once they purchase a certain number of books.
Free delivery is not offered to regular customers or VIP customers buying anything other than books
Given that the minimum number of books to get free delivery is five
Then we expect the following:
| Customer Type | Cart Contents | Delivery |
| VIP | 5 books | Free, Standard |
| VIP | 4 books | Standard |
| Regular | 10 books | Standard |
| VIP | 5 Blenders | Standard |
| VIP | 5 Books, 1 Blender | Standard |