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Prepare for your certification, a few minutes at a time.

Original study notes and practice questions for cloud certification exams, designed for learning on your phone.

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  • Amazon API Gateway 10 min read

    Amazon API Gateway

    Managed front door for APIs: REST, HTTP, and WebSocket APIs, endpoint types, integrations, authorization with IAM, Cognito, and Lambda authorizers, resource policies and private APIs, throttling, usage plans, caching, stages and canary releases, WAF, cost, and monitoring.

  • Amazon Aurora 7 min read

    Amazon Aurora

    AWS's MySQL- and PostgreSQL-compatible relational engine: the shared cluster volume across three Availability Zones, Aurora Replicas and failover, endpoints, Global Database, backups, backtrack and cloning, Standard and I/O-Optimized storage, security, cost, and monitoring.

  • Amazon CloudFront 8 min read

    Amazon CloudFront

    AWS's content delivery network: edge locations, distributions, origins, caching and TTLs, cache policies, invalidations, origin access control for S3, VPC origins, signed URLs and cookies, geographic restrictions, HTTPS and ACM certificates in us-east-1, WAF and Shield, Origin Shield, origin failover, CloudFront Functions and Lambda@Edge, flat-rate plans, and cost.

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