Feedback Loop
A situation where part of the output of a situation is used for new input. In IT, feedback loops (from users, from monitoring, from tests) are essential for controlling and improving the system.
Impact
The speed of the feedback loop determines the speed of innovation. If it takes 3 months to know if a feature is used, you are flying blind for a quarter.
Weinto take
We optimize for Tight Feedback Loops. A developer should know IF their code works within seconds (unit tests). They should know HOW it performs within minutes (staging). They should know WHO uses it within hours (production analytics). Shorten the loop, win the market.