| Standard hardware equipment | Since the operation of the KatApp is to be kept open on a server in a fire engine, the application should also be able to run on normal hardware and not just in the cloud. |
| Freely and open source software from third-party providers | If third-party software / source code is used, this must also be freely available, as the source code of the KatApp will also be made available as open source at a later date. |
| Implementation in Go | The predecessor of the KatApp backend was already developed in Go. The fact that Go is much faster than Java, Python, Javascript, … and is also executable as FaaS, Go is still used for development. |