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…
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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…
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 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…
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…
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,…
Cloud Computing
AWS SAP-C02: Hybrid DNS with Route 53 Resolver
Hybrid DNS becomes an architecture problem as soon as workloads in AWS need to resolve private names hosted on premises…
Enterprise Applications
AWS SAP-C02: Enterprise Identity Federation
Enterprise identity federation in AWS is less about choosing a login screen and more about deciding where workforce identity is…
Cloud Computing
AWS SAP-C02: Direct Connect and VPN Resilience Patterns
Hybrid connectivity is often designed as if “a Direct Connect” or “a VPN” were complete architectures. They are only components.…