DevOps & Automation
AWS DOP-C02: CI/CD with CodePipeline and CodeBuild
AWS CodePipeline and AWS CodeBuild solve different parts of continuous delivery. CodePipeline models the release workflow as stages and actions,…
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Cloud Computing
AWS SAA-C03: Well-Architected Tradeoffs for Real Systems
The AWS Well-Architected Framework is most useful when it is treated as a way to reason about tradeoffs, not as…
Networking
AWS SAA-C03: SQS, SNS, and EventBridge Architecture Patterns
Amazon SQS, Amazon SNS, and Amazon EventBridge are all used to move work between systems, but they solve different integration…
Cloud Computing
AWS SAA-C03: S3 Storage Classes and Lifecycle Strategy
Amazon S3 storage classes are not simply a list from fastest to cheapest. Each class encodes assumptions about access frequency,…
Cloud Computing
AWS SAA-C03: S3 Public Access & Bucket Policies
Amazon S3 security is not a single bucket-policy problem. Access can be influenced by identity policies, bucket policies, access points,…
Cloud Computing
AWS SAA-C03: Route 53 Routing Policies and Failover
Amazon Route 53 is often introduced as managed DNS, but architecture decisions begin after the zone exists. The important question…
Cloud Computing
AWS SAA-C03: RDS Multi-AZ vs Read Replicas
RDS Multi-AZ and read replicas are often mentioned together because both involve additional database copies, but their primary purposes are…
Networking
AWS SAA-C03: Public vs Private Subnets
Public and private subnets are among the first concepts people learn in Amazon VPC, yet the labels are frequently misunderstood.…
Networking
AWS SAA-C03: NAT Gateway vs NAT Instance
NAT remains a common part of AWS IPv4 architectures because private workloads often need outbound access to software repositories, partner…