DNS

Route 53 Resolver for Hybrid DNS | AWS SAP-C02

2 February 2026·4973 words·24 mins

Networking Hybrid Connectivity Route 53 DNS Hybrid Resolver Multi-Account

This pillar teaches the decision logic behind AWS hybrid DNS architecture. Learn when to use Route 53 Resolver endpoints, understand forwarding rule configurations, and master the DNS resolution patterns that appear throughout SAP-C02.

Cross-Account Route 53 PHZ Trade-offs | SAP-C02

25 December 2025·1203 words·6 mins

Architecture Drills AWS SAP-C02 FinOps Decision Matrix Route 53 Cross-Account DNS VPC

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.

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