Cloud across providers
AWS, Azure & GCP Interview Questions
Compute, networking, storage, identity, cost and reliability across the three major cloud platforms.
40 questions10 easy22 medium8 hard0/40 learned
01What are the main cloud computing models?Easycloud · service models · fundamentals02How do IaaS, PaaS and SaaS differ?Easyiaas · paas · saas03What are regions and availability zones?Easyregions · availability zones · resilience04How do AWS, Azure and GCP compare?Easyaws · azure · gcp05How does cloud IAM work?Mediumiam · authorization · security06How do you apply least privilege in the cloud?Mediumleast privilege · iam · security07How do virtual networks work?Mediumvpc · networking · cidr08What are subnets and how do you design them?Mediumsubnets · vpc · networking09How do security groups and network ACLs differ?Hardsecurity groups · network acl · firewall10How do cloud load balancers work?Mediumload balancing · high availability · networking11How does auto-scaling work and what should drive it?Mediumautoscaling · capacity · metrics12What is object storage and when should you use it?Easyobject storage · s3 · storage13What is block storage and how does it differ from object storage?Mediumblock storage · ebs · storage14When should you use a managed database?Mediummanaged databases · rds · operations15What is serverless computing?Mediumserverless · lambda · functions16How do you run containers in the cloud?Easycontainers · docker · registries17What do managed Kubernetes services handle for you?Hardkubernetes · eks · gke18Why use a message queue in cloud architecture?Mediumqueues · sqs · decoupling19How do event-driven architectures work?Mediumevents · eventbridge · pubsub20How does a CDN improve a cloud application?Mediumcdn · caching · edge21How does DNS work in the cloud?Easydns · route53 · networking22How do you monitor and log a cloud system?Mediumobservability · logging · metrics23How do you control cloud costs?Mediumfinops · cost · tagging24What cloud pricing models should you know?Hardpricing · commitments · spot25What are the core cloud security practices?Mediumsecurity · shared responsibility · guardrails26How does encryption at rest work in the cloud?Mediumencryption · kms · data protection27How do you encrypt data in transit?Easytls · encryption · certificates28How should you manage secrets in the cloud?Mediumsecrets · vault · rotation29How do you design backup and disaster recovery?Hardbackup · disaster recovery · rpo30How do you build a highly available system in the cloud?Mediumhigh availability · multi-az · failover31How do you design a multi-region architecture?Hardmulti-region · replication · failover32Why use infrastructure as code?Mediumterraform · iac · automation33How does CI/CD work with cloud infrastructure?Mediumci-cd · oidc · deployment34How does VPC peering work and when should you use it?Hardpeering · transit gateway · networking35What is hybrid cloud and how do you connect it?Mediumhybrid cloud · connectivity · on-premises36What are the main cloud migration strategies?Hardmigration · 6 rs · modernization37What is the Well-Architected Framework?Mediumwell-architected · review · pillars38When would you choose serverless over containers?Hardserverless · containers · trade-offs39What are common cloud mistakes?Easymistakes · misconfiguration · operations40What cloud best practices should every team follow?Easybest practices · landing zone · governance
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