Priorization workshop »Basic features for a minimum viable product (MVP)« (PRIO-1)

In total 4, from a target group size of 4. The participants belong to the stakeholder role . The target group consists of members of Team C . Team C
Conducting the Workshop
The Workshop took place on 10.06.2022 between 13:00 and 14:00 o'clock. The location was in Innovation Hub, TH Campus Steinmüllerallee / Gummersbach.
Method: CAF (consider all facts) & PMI (Plus Minus Interesting) after top eight method
First we picked from our current functional requirements list the top eight concerning the goal customer experience. Then for the CAF method we chose four criteria which derived from other goals and are important factors for our success. We also rated their importance on our success. The results can be found below. After that we went over to the PMI method and drew a matrix with each factor as a row and each requirement as a column. In the matrix fields we wrote +, - or I depending on the inlfuence of the requirement on the success factor. Lastly we calculated the sum for each column below the matrix according to the combinated CAF/PMI method.
Responsible RE-Author(s) for this Artefact
Tim Pack, Celina Schulz, Ali Abdulra, und Lydia Vogel
(v1)   2022-06-25 - Initially created
(v2)   2022-08-07 - changed Why this method because of copying mistake
Errors, Warnings, Todos
w   w005: More than 3 authors (field 'author') - is that on purpose?

Why this method?

Using the Top Eight method first helps cut down a bigger number of FRs because it makes you focus on those ones that are actually relevant with regards to a specific chosen target. Using the Consider all Facts (CAF) method is then good for selecting factors which influence the system’s success so that other, irrelevant factors get excluded. By rating the relevance of each factor in relation to the system’s success, a first top level priorization can be achieved. This method therefore helps to focus on what is really important in the current situation/context. Furthermore, combining CAF with the Plus Minus Interesting (PMI) method helps to identify which FR is impacting which success factor negatively (-) or positively (+). The “Interesting” (I) category also aids in discovering which impacts are not yet fully understood and need to be further investigated. Lastly, combining these two methods results in scores for each FR which can be easily compared to identify which FRs are the most important. The combination of these methods is very practical and success-oriented but also flexible because it allows you to choose what success factors / goals there are for your specific context.


Our top eight requirements are: R3: Forwarding changes to the status of the order to the user R7: If the user wants to plan his existing furniture in a room, he should be able to select products from a list R9: If the user wants to select products from a list, he should be able to filter by various product categories R11: Move the selected product models in the AR room R12: Place the selected products in the AR room R15: The furniture must be customizable in its design R17: The theme of a room, which the user hat set up, must be able to be saved R18: Update product information by the business customers For this method, R16 & R17 were considered as the same requirement because they are linked. The loading & saving of themes is to be considered the same functionality. These top eight requirements are the ones which affect our main goal of customer experience the most and which are considered essential for an MVP.

Our CAF success factors are (with rating): “Efficiency” 4, “Prefer our system over normal webshops” 3, “Support creativity” 5 and “Matches Reality” 5

The influence of the requirements on the success factors is displayed in the matrix in the picture below.

The sum of each requirement was (sorted): R17 & R15: 17, R11 & R12: 14, R7 & R9 & R18: -3, R3: -6 Therefore, the requirements of saving a room theme (R17) and enable customization in the displayed furniture (R15) are the most important for the MVP. They have the highest priority. Also the placing (R12) moving (R11) of selected product models in the AR room gained a high priorization. The other requirements which were considered have a lower prio.

We documented our results on paper:

Priorization results