Table 1: PU and PEOUs of the evaluated items
| Item | Step | Focus | Question | Mean | # respondents |
| Taxonomy | 1c | PU | The selected properties help me in the development of the platform-specific ontology | 4.5 | 2 |
| Taxonomy | 1c | PU | The selected properties in the taxonomy improves my understanding of the platform business model | 4 | 2 |
| Taxonomy | 1c | PU | Overall, I find the taxonomy useful | 4.4 | 12 |
| Taxonomy | 1c | PEOU | I found it easy to understand the properties in the taxonomy | 4.5 | 2 |
| Taxonomy | 1c | PEOU | It was clear why certain values in the taxonomy were constrained by the selection of other properties | 4 | 2 |
| Taxonomy | 1c | PEOU | Overall, I found it easy to use the taxonomy | 5 | 2 |
| Ontology | 2a | PU | The ontology helps me in defining the user stories | 3.5 | 2 |
| Ontology | 2b | PU | The ontology helps me in developing the process model | 3 | 2 |
| Ontology | 3a | PU | The ontology helps me in creating the User Interface (prototype) | 4.1 | 12 |
| Ontology | 3b | PU | The ontology improves the quality of my database | 4.1 | 12 |
| Ontology | 3c | PU | The ontology helped me in structuring my software code | 4.3 | 12 |
| Ontology | 3c | PU | The ontology could help in getting new developers up to speed in the project | 4.5 | 2 |
| Ontology | 3c | PU | The ontology helped me in writing the software code faster | 4 | 2 |
| Ontology | 3c | PU | The ontology improved the quality of the software | 3.5 | 2 |
| Ontology | PU | Overall, I found the ontology useful | 4.5 | 2 | |
| Ontology | PEOU | I found it easy to create the platform-specific ontology | 4 | 2 | |
| Ontology | PEOU | I found the ontology easy to understand and use | 4 | 2 | |
| User stories | 2a | PU | The user stories helped me in creating the User Interface (prototype) | 4.5 | 2 |
| User stories | 3c | PU | The user stories helped structuring the software code | 5 | 2 |
| User stories | 3c | PU | The user stories made it easier to write the software code | 4 | 2 |
| User stories | PU | Overall, the user stories where useful | 4.5 | 2 | |
| User stories | PEOU | I found it easy to create user stories | 5 | 2 | |
| User stories | PEOU | I found the user stories easy to use | 4 | 2 | |
| Process model | 3a | PU | The process model helped me in creating the User Interface (prototype) | 5 | 2 |
| Process model | 3c | PU | The process model helped me in structuring my code | 5 | 2 |
| Process model | 3c | PU | The process model improved the quality of the software | 2 | 2 |
| Process model | 3c | PU | Overall, I found the process model useful | 2.3 | 12 |
| Process model | 3c | PEOU | I found it easy to develop a process model based on the ontology. | 3 | 2 |
| Process model | 3c | PEOU | The process model developed was easy to understand. | 3 | 2 |
| Process model | 3c | PEOU | Overall, the process model was easy to use. | 3 | 2 |
| Method | PU | The method improved the quality of my MVP | 5 | 2 | |
| Method | PU | The method guided me to work more agile | 5 | 2 | |
| Method | PU | Overall, the ontology-driven MVP development method was useful | 5 | 2 | |
| Method | PEOU | I found the ontology-driven MVP development method easy to understand | 5 | 2 | |
| Method | PEOU | The structure of the ontology-driven MVP development method was easy to read | 5 | 2 | |
| Method | PEOU | Overall, he ontology-driven MVP development method was easy to use | 5 | 2 |
[td1]Todo: put online