The key concept behind running a successful business on the internet is knowing in real time how your business is doing. Knowing if your key transactions are in a healthy state and operate around the estimated/optimal level, and getting fast relevant notifications to the adequate people when they don’t will make a difference between succeeding and failing. But how can you achieve this level of awareness? Observability. ::: tip Definition Observability: measure of the ability of the internal states of a system to be determined by its external outputs. ::: Bringing the definition to more understandable terms, we want to be able to figure out what’s going on in our system/application interpreting the information gathered from the system it ...