Your question is Highly Available Jenkins Pipeline. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Design a highly available Jenkins pipeline that supports reliable deployments.
Provide a practical design covering Jenkins controller availability, durable build state, elastic agents, source control triggers, artifact promotion, deployment approvals, health checks, rollback, and recovery from failed builds or infrastructure outages. Show the Jenkinsfile or equivalent pipeline configuration, deployment flow, security boundaries, monitoring signals, and how the design prevents duplicate or conflicting production deployments.