I first review this component as misleading because it was missing the "How to" title. Since then, the owners update it, which I think is great of them to pay attention to the community around them. Although there is definitely space to improve on this How-to, I'm giving it 5 stars anyways.

Misleading title. Where's the POC ?

Latency  and hindrance in projects due to slow API design is usually overcome by mocking them in OutSystems.
It is the most effective way to accelerate development and to create a MLP ( minimum lovable project).
A "How to" on  this subject is more than useful and very valuable on the perspective of agile development.