Backend Infrastructure and Deployment Questions

Covers designing, building, and operating the platform and deployment pipelines for backend services. Topics include cloud architecture with providers such as Amazon Web Services and Google Cloud Platform, containerization with Docker, orchestration with Kubernetes, continuous integration and continuous delivery pipelines, infrastructure as code for reproducible environments, deployment strategies such as rolling updates, blue green deployments and canary releases, autoscaling and load balancing, service mesh considerations, networking and security at the infrastructure layer, secrets and configuration management, cost optimization, and observability at the platform level. Candidates should describe trade offs and practical experience operating production infrastructure.