Operational Excellence and Evolution Strategy Questions

Practices for evolving infrastructure safely and running networks with operational excellence. Covers phased evolution plans, backward compatibility strategies, deprecation and migration planning, zero downtime deployment techniques including canary and blue green approaches, observability and runbook design, automation to reduce manual toil, change windows and communication plans, testing and rollback strategies, post incident reviews, and aligning monitoring and capacity planning with operational goals. This topic tests a candidate ability to plan long lived infrastructure changes that minimize risk while enabling ongoing innovation.