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How did you contribute to cost optimization initiatives while working with cloud technologies?

Cloud/Toolshard0.3 min readPremium
Frequency
Low
Asked at 1 company
Category
179
questions in Cloud/Tools
Difficulty Split
104E|27M|48H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Walmart
Key Concepts Tested
optimization
Expert AnswerPremium
58 wordsInterview-ready
Situation: Cloud spend grew with adoption. Task: Reduce cost without impacting delivery. Action: (1) Right-sized EC2 and EMR. (2) Reserved Instances for baseline. (3) S3 lifecycle and Intelligent-Tiering. (4) Stopped non-prod outside hours. (5) Tagging and chargeback. (6) Query optimization (Athena, Redshift). Result: ~30% cost reduction....
The complete answer continues with detailed implementation patterns, architectural trade-offs, and production-grade considerations. It covers performance optimization strategies, common pitfalls to avoid, and real-world examples from companies like Walmart. The answer also includes follow-up discussion points that interviewers commonly explore.

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