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Top 50 cloud architecture Interview Questions

The most frequently asked cloud architecture questions across all roles and companies, ranked by real interview frequency. Updated daily.

50questions
~7htotal time
244companies covered
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System DesignStart here. 45 questions · ~371 min
High Availability and Fault ToleranceHard
Recently asked

Design high availability and fault tolerance for a distributed service, including failure detection, recovery, capacity, and operational safeguards.

cloud architecturedistributed systemshigh availabilityHarveyInterosMMuon Space
Legacy Migration StrategyHard
Recently asked

Design a phased cloud migration strategy for a legacy system with explicit validation, rollback, security, and operational risk controls.

system designmigration strategycloud architectureMMuller's SolutionsOOsborne ClarkeIIntellivo
System Design: Traffic SpikeHard
Recently asked

Design an ML-backed system that remains reliable and cost-effective during a 10x seasonal traffic spike.

cloud architecturesystem architecturedistributed systemsHHackerRankDDeichmannMMerkle
Capacity Planning in CloudHard
Recently asked

Explain how to forecast, provision, scale, and control capacity for cloud-based ML workloads.

strategiescloud environmentcloud architectureCCode PlusAAlibaba CloudAAcquia
High Availability StrategiesHard

Explain practical strategies for high availability, redundancy, failure detection, and disaster recovery in distributed systems.

cloud architecturedistributed systemshigh availabilityTThe Employment SolutionMMulticorewareSuperhuman
Capacity Planning for SpikesHard
Recently asked

Plan capacity for an ML platform with unpredictable seasonal demand while balancing latency, resilience, and infrastructure cost.

latencycloud architecturecost constraintsSynertexViasatSSonata
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2
More topics5 questions · ~41 min
Normalized vs Denormalized Trade-offsMedium
Practice

Aggregate account holdings from a normalized model while assessing the query trade-offs of denormalized data.

Joinscloud architecturenormalizationCharles Schwab
Optimizing Cloud Costs Under VolatilityMedium
Recently asked

Tests ownership and leadership in reducing cloud costs under ambiguous, fast-changing demand while balancing reliability and stakeholder expectations.

cloud architecturecost constraintsResource AllocationAndelaAADACOR HostingTipalti
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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
Optimizing Window Functions at ScaleHard
Practice
Practice drill

Optimize a PostgreSQL window query by reducing rows before cumulative account-level transaction calculations.

Window Functionsdatabase optimizationlarge datasetsPlaid
Optimize Slow SQL in Distributed SystemsHard
Practice
Practice drill

Rewrite a slow distributed event query using predicate pushdown, pre-aggregation, joins, and deterministic ranking.

Performance Tuningdatabase optimizationlarge datasetsFactored
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