Difficulty Distribution
Skills You'll Practice (9)
All 3 Scenarios
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AWS Costs Doubled Overnight
It's Monday morning. Your AWS bill for the weekend was $12,000 — normally you spend $6,000. Your team lead is asking for a full breakdown by 2pm. You have access to Cost Explorer, CloudWatch, and CloudTrail. Walk me through your investigation.
Multi-Region Architecture Design
Design a multi-region active-active architecture for a SaaS product. Requirements: 99.99% uptime, users in US-East, EU-West, and Asia-Pacific, must handle region failure gracefully, data must comply with GDPR. Walk me through your design.
S3 Egress Costs Out of Control
Your monthly S3 egress bill is $47,000 — up from $8,000 six months ago. Traffic patterns haven't changed significantly, but users are complaining about slow downloads. Walk me through how you diagnose and fix this.