Coffee Machine is an awesome web application that from a few input parameters (drink type, amount of money, number of sugars and extra hot check) is capable to order a drink and show a cool message of the desired drink.
This app is a common coffee machine (vending machine) where you have to insert money and select the type of drink you want, and it will return to you that beverage, in case you insert the enough money and select an available drink type. Easy peasy :)
Now our PM wants to have a better web application. But the developer of it is no longer in the company. Can you help us improve the app?