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,…
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Browse practical guides, technical explanations and certification coverage.
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,…
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: 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…
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,…
Cloud Computing
AWS DOP-C02: CloudWatch for Distributed Apps
Distributed applications fail in ways that single-server monitoring cannot explain. A user request may cross a load balancer, container service,…
DevOps & Automation
AWS DOP-C02: Deployment Strategies with CodeDeploy
AWS CodeDeploy automates application deployment across Amazon EC2 and on-premises instances, AWS Lambda, and Amazon ECS, but the important architectural…
Networking
AWS DOP-C02: Event-Driven Operations with EventBridge
Amazon EventBridge is often described as a serverless event bus, but its operational value comes from turning changes in AWS…
Cloud Computing
AWS DOP-C02: Infrastructure as Code with CloudFormation
AWS CloudFormation turns infrastructure definitions into managed stacks, but reliable infrastructure as code requires more than storing a template in…
Enterprise Applications
AWS SAP-C02: Large-Scale Migration with Migration Services
A large AWS migration is not one project repeated hundreds of times. It is a portfolio program in which discovery,…
Enterprise Applications
AWS SAP-C02: Multi-Account Architecture with Organizations
AWS accounts are not merely billing containers. They are strong boundaries for identity, resource ownership, quotas, blast radius, logging, and…
Cloud Computing
AWS SAP-C02: Multi-Region Active-Active Application Design
Active-active multi-Region architecture means more than keeping a warm copy of an application somewhere else. Multiple Regions serve real traffic…
Infrastructure & Systems
AWS SAA-C03: Backup and Cross-Region Recovery
Backup architecture in AWS should answer a recovery question, not merely produce recovery points. A backup is useful only if…
Cloud Computing
AWS SAA-C03: Transit Gateway for Multi-VPC Networks
AWS Transit Gateway is valuable when a cloud network has outgrown a web of VPC peering connections, VPN attachments, and…
Cloud Computing
AWS SAA-C03: VPC Design for Multi-Tier Applications
A multi-tier VPC design should make the application’s trust boundaries visible in the network rather than placing every component in…