you build it, you run it
expressionops culturecloud
The DevOps principle that the team that writes a service also operates it in production.
Werner Vogels' phrase from Amazon, and the cultural end of throwing code over the wall: nothing teaches operability like being the one who gets paged. Ownership closes the loop between design decisions and 3 a.m. reality.
You build it, you run it is Werner Vogels's description of Amazon's model, and its point is about incentives rather than staffing. When the team that wrote the software carries the pager for it, the cost of a poor logging decision, a missing metric or an unclear failure mode is paid by the people who chose them, and behaviour changes accordingly.
The traditional alternative, developers writing and a separate operations team running, produces a predictable pathology. Operational quality is somebody else's requirement, so it loses to features consistently, and the operations team inherits systems they cannot change and are accountable for anyway. Everything that fell between the two groups became a wall of confusion, which is the problem the whole DevOps movement was formed around.
The honest caveats matter. It requires real investment in tooling, or it is simply a transfer of burden; it needs on-call to be humane, compensated and staffed enough to sustain, or it becomes attrition; and it does not eliminate specialist operations expertise, since platform, network and database work remain genuine disciplines. Applied without those, the slogan describes a cost shift rather than an improvement.