Prototype critical systems
Some processes are absolutely crucial for your organisation, they crunch a lot of data and need top performance and reliability. For these solutions a no-code platform is not the obvious choice.
Developing such a critical system often takes time, a lot more time than you'd like anyhow. What are you going to do in the mean time?
Though less performant, a temporary no-code solution could help you bridge the gap, because they can be built fast and cost-effective.
There is another aspect to this. Building an easy to adapt temporary system, is an excellent way to discover the true needs of the users. This will make it a lot easier to build your core system right in one go, while at the same time you're making sure business keeps running smoothly.