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.

Exams

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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