Comparisons interview prep

• ALB vs NLB — Layer 7 application load balancing versus Layer 4 network load balancing on AWS.
• Argo CD vs Flux — GitOps continuous delivery tools for Kubernetes compared.
• Aurora vs RDS — When to use Aurora's distributed storage engine versus standard RDS managed databases.
• Blue-Green vs Canary Deployment — Instant environment swap versus gradual traffic shifting for zero-downtime releases.
• CircleCI vs GitHub Actions — Dedicated CI/CD SaaS platform versus GitHub-integrated workflow automation.
• CloudFront vs ALB — Global CDN with edge caching versus regional application load balancer for web traffic.
• CloudWatch vs Datadog — AWS-native monitoring versus third-party unified observability platform.
• Containers vs Serverless — Architectural tradeoffs between containerized services and function-as-a-service platforms.
• EC2 Instance Type Selection — Choosing the right EC2 instance family for compute, memory, storage, and accelerated workloads.
• EC2 vs Lambda — When to run long-lived servers versus event-driven functions.
• ECS vs EKS — When to use AWS-native container orchestration versus Kubernetes.
• ECS vs Lambda Deployment Patterns — Deployment strategies and update patterns for containerized versus serverless workloads.
• ElastiCache Redis vs Memcached — When to use Redis versus Memcached for distributed caching on AWS.
• ELK Stack vs Loki — Full-text log indexing versus label-based log aggregation for observability.
• Fargate vs EC2 Launch Type — Serverless containers versus self-managed EC2 nodes for ECS and EKS workloads.
• GitHub Actions vs Jenkins — Cloud-native CI/CD versus self-hosted automation server.
• GitLab CI vs GitHub Actions — Comparing two leading cloud-native CI/CD platforms for modern DevOps teams.
• Grafana vs Kibana — Multi-source metrics dashboarding versus Elasticsearch-centric log analytics.
• Helm vs Kustomize — Kubernetes package manager with templating versus configuration overlay system.
• Jaeger vs Zipkin — CNCF distributed tracing versus the original open-source trace aggregation system.
• Kafka vs SQS — High-throughput distributed log versus managed message queue for event streaming.
• Kinesis vs Kafka — AWS-native data streaming versus open-source distributed event log.
• PrivateLink vs VPC Peering — Service endpoint exposure versus full VPC routing for private connectivity.
• Prometheus vs Datadog — Open-source pull-based metrics versus commercial SaaS observability.
• RabbitMQ vs SQS — Traditional AMQP message broker versus AWS-managed queue service.
• RDS vs DynamoDB — Relational SQL databases versus managed NoSQL for AWS workloads.
• Redshift vs Athena — Provisioned columnar warehouse versus serverless SQL-on-S3 for analytical queries.
• Rolling vs Blue-Green Deployment — Incremental in-place replacement versus full environment swap for production releases.
• Route 53 Routing Policies — Choosing the right DNS routing policy for traffic management, failover, and geo-distribution.
• S3 vs EFS vs EBS — Choosing the right AWS storage service for objects, files, or block-level access.
• Spinnaker vs Argo CD — Enterprise multi-cloud delivery platform versus Kubernetes-native GitOps tool.
• SQL vs NoSQL — Relational versus non-relational database models and when each fits.
• SQS vs EventBridge — Work queues versus event routing for decoupled AWS architectures.
• SQS vs SNS — Queue-based point-to-point messaging versus topic-based fan-out delivery.
• VPC Peering vs Transit Gateway — Direct VPC-to-VPC connections versus centralized hub-and-spoke network topology.

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