Indeed. For a while we focused on the happy path/MVP, and I was amazed how quickly edge-cases start piling up and sinking the ship with endless fixing/debugging

Indeed. For a while we focused on the happy path/MVP, and I was amazed how quickly edge-cases start piling up and sinking the ship with endless fixing/debugging/rework tasks. Now, we start with failure-cases first, engineer for resilience, and only then think about features. In consumer tech, failure rates of 2-5% often will not even trigger PagerDuty, but in enterprise that gets you fired real quick.