In recent weeks and months, we have written a lot about cyber defence. Over the course of time, you will have realised that rapid detection and even faster reaction to cyber attacks in a Cyber Defence Center are crucial to boosting your cyber resilience. In this article, we would like to show you what you have to bear in mind when you set up a Cyber Defence Center - and why outsourcing this elementary part of cyber security is a sensible, economical alternative.