Follow-up · depth 8
Design a small subsystem that relies on AWS VPC, Subnets, and Security Groups
Design a small subsystem that relies on AWS VPC, Subnets, and Security Groups
Answers use simple, clear English.
Quick interview answer
Sketch components, data flow, failure modes, and metrics around AWS VPC, Subnets, and Security Groups. Example shape: ALB in public subnets; ECS tasks in private; NAT for egress.
Detailed answer
Mini design using AWS VPC, Subnets, and Security Groups: • Components: API edge, worker/queue, store, and observability. • Data flow: request → AWS VPC, Subnets, and Security Groups-related path → response/async side effects. • Failure modes: timeouts, overload, partial dependency loss. • Metrics: latency, errors, saturation for the AWS VPC, Subnets, and Security Groups path. Guardrails: Least privilege SG; VPC endpoints for S3/ECR; flow logs. Parent context: Baseline: VPC CIDR, public/private subnets, IGW/NAT, route tables. Security groups stateful allow-lists; NACLs stateless.
Full explanation
Interviewers want a crisp architecture story anchored on AWS VPC, Subnets, and Security Groups, not a buzzword list. VPC CIDR, public/private subnets, IGW/NAT, route tables. Security groups stateful allow-lists; NACLs stateless. Private workloads without public IPs.
Follow-up questions
Only answered follow-ups are shown — click to open with full answers
Parent context — AWS VPC, Subnets, and Security Groups
Baseline: VPC CIDR, public/private subnets, IGW/NAT, route tables. Security groups stateful allow-lists; NACLs stateless.
View full parent question →