The AWS shared responsibility model is easiest to understand when it is treated as a moving operating boundary rather than a slogan. AWS is responsible […]
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Amazon AWS CLF-C02: Regions, Availability Zones, Edge Locations, and Local Zones
AWS location terminology describes different layers of infrastructure, and each layer solves a different problem. A Region is a separate geographic area. Availability Zones are […]
Amazon AWS CLF-C02: On-Demand, Savings Plans, Reserved Instances, and Spot
AWS compute pricing is not a single choice between “cheap” and “expensive.” On-Demand, Savings Plans, Reserved Instances, and Spot Instances exchange different kinds of flexibility […]
Amazon AWS CLF-C02: Choosing AWS Cost Management Tools
AWS Cost Explorer, AWS Budgets, AWS Pricing Calculator, and Cost and Usage Reports all work with cloud cost, but they answer different questions. Cost Explorer […]
Amazon AWS CLF-C02: CAF vs Well-Architected Framework
The AWS Cloud Adoption Framework and the AWS Well-Architected Framework are often mentioned together because both organize AWS best practices. They operate at different decision […]
Amazon AWS DOP-C02: CI/CD Pipeline Design
A useful AWS CI/CD pipeline is more than a sequence of source, build, and deploy icons. It is a controlled path that turns a specific […]
Amazon AWS DOP-C02: Blue-Green, Canary, Rolling, and Linear Deployments on AWS
Blue-green, canary, rolling, and linear deployments all reduce the risk of changing production, but they control risk in different ways. Rolling replacement limits how much […]
Amazon AWS DOP-C02: CloudFormation StackSets, Organizations, and Account Vending
Multi-account AWS automation works best when account creation, organizational governance, and resource deployment are treated as separate layers. AWS Organizations provides the account and organizational-unit […]
Amazon AWS DOP-C02: CloudWatch, X-Ray, and OpenTelemetry on AWS
A useful AWS observability design does more than collect logs and draw dashboards. It connects infrastructure health, application behavior, user-facing symptoms, and distributed request paths […]
Amazon AWS DOP-C02: Automating AWS Incident Response
Automated incident response on AWS is not the same as automatically fixing everything. The goal is to detect a trustworthy condition, enrich it with enough […]
Amazon AWS SAA-C03: Transit Gateway, VPC Peering, or PrivateLink?
Choosing between AWS Transit Gateway, VPC peering, and AWS PrivateLink becomes much easier when the design question is framed correctly. These services are often grouped […]
Amazon AWS SAA-C03: DynamoDB vs Aurora Serverless
DynamoDB and Aurora Serverless can both remove much of the capacity administration associated with traditional databases, but that similarity is superficial. Amazon DynamoDB is a […]
Amazon AWS SAA-C03: Event-Driven Serverless Architecture on AWS
An event-driven AWS application separates synchronous request admission from asynchronous execution, buffering and fan-out. API Gateway can front a request, Lambda performs bounded computation, SQS […]
Amazon AWS SAA-C03: CloudFront vs Global Accelerator
Amazon CloudFront and AWS Global Accelerator both use the AWS global network and edge infrastructure to improve application performance, but they operate at different layers […]
Amazon AWS SAA-C03: EFS, FSx, or S3 for Storage?
Amazon EFS, Amazon FSx, and Amazon S3 can all hold application data, but they expose that data through very different storage models. EFS is a […]