Reliability Engineering

Reliability engineering makes a service dependable by design and operation. It starts with the service a user experiences, not with a list of infrastructure components. You define what good service means, measure it, respond when it drifts, and learn from failure.

A reliable service is not a service that never fails. Components, networks, deployments, and people all fail. The useful question is whether the service still performs its intended function within the conditions you promised, or recovers in a controlled way.

Reliability work therefore crosses design, delivery, and operations. A team maps dependencies and failure modes before launch. It builds redundancy, recovery paths, and observability into the service. It uses incident response to reduce impact. It uses postmortems and follow-up work to make the next failure less harmful.

Start with user expectations