Learn why NAT Gateway placement in public subnets across all AZs is the AWS-recommended pattern for private subnet internet access, and understand the hidden cost implications of high availability decisions.
How do you balance infrastructure isolation, automation efficiency, and FinOps discipline when provisioning ephemeral test environments that require on-premises connectivity? This SAP-C02 drill explores Transit Gateway attachment strategies and Infrastructure-as-Code patterns.
This drill dissects a multi-region high availability and DR scenario, comparing active-active vs. active-passive architectures, VPC peering misconceptions, and Route 53 routing policy selections—with quantified FinOps impact for professional-level decision-making.
A high-level summary: When migrating a web application to AWS that depends on a third-party API with strict IP whitelisting (single CIDR block), the correct solution is to use BYOIP (Bring Your Own IP) with NAT Gateway, not ALB or Global Accelerator. This drill deconstructs why outbound traffic routing—not inbound traffic acceleration—is the critical constraint.
A global gaming startup runs multiple VPC-native GKE clusters on a shared subnet and faces IP exhaustion. This drill analyzes the best approach to scale node pools without network disruptions.
This drill explores how to reduce cloud spending for a high-security image processing service by optimizing VPC networking—specifically choosing between NAT Gateways and S3 Gateway Endpoints for 1TB daily S3 data transfer.
This drill explores connecting Compute Engine instances running in separate VPCs and projects, focusing on the best practices for network sharing and access control.
Master the fundamental difference between network-layer isolation (route tables) and application-layer security (security groups) when protecting RDS databases in multi-tier VPC architectures.
A multi-account DNS resolution failure reveals the critical difference between VPC association and authorization grants. This drill explores why correct sequencing of Route 53 cross-account operations matters more than DNS record configuration.
A foundational SAA-C03 scenario examining why IAM Roles trump static credentials for EC2-to-S3 authentication, with focus on security posture and operational efficiency.