The importance of observability cannot be overstated, especially as it pertains to modern systems.
Essentially, observability is how well you can understand the internal state of a system by external outputs. This definition was coined more than 60 years ago, well before the modern internet and most services we know today. The importance of observability cannot be overstated, especially as it pertains to modern systems. As these systems become more complex, run on ephemeral infrastructure, or on a serverless system where we have no access, the outputs become the only visibility we have into the system. If we want to know what is going on with our services, we need to rely on these outputs for a general understanding of the operation, as well as troubleshooting when things don’t go as expected.
