Interview › Resume & Behavioral
Your title is Senior DevOps / SRE Lead - how do you personally define the difference between DevOps and SRE?
Resume & Behavioral · Basic level
Answer
I define DevOps as the broader engineering culture and practice that reduces friction between development and operations: automation, CI/CD, shared ownership, faster feedback, and repeatable delivery. SRE is a more specific reliability discipline that applies software engineering to operations and makes reliability measurable through SLIs, SLOs, error budgets, incident response, and toil reduction. In my role the two overlap: I help teams ship faster, but I make sure speed is supported by observability, rollback, progressive delivery, and clear reliability targets.
Technical explanation
DevOps is primarily about flow, collaboration, and automation across the software lifecycle.
SRE is an operating model for reliability: define the promise, measure it, manage risk through error budgets, and automate toil away.
A senior answer should connect both to business outcomes: customer trust, delivery speed, incident reduction, and sustainable operations.
Hands-on example
1. For a new service, the DevOps work is CI/CD, artifact promotion, environment parity, and developer self-service.
2. The SRE work is defining SLIs/SLOs, creating burn-rate alerts, writing runbooks, validating rollback, and adding canary health gates.
3. A practical release gate: deploy to 5% traffic, monitor 5xx, p95 latency, saturation, and business transaction success, then continue or rollback automatically.
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