Running everything in a single AWS account quickly becomes painful as teams, environments, and compliance needs grow. This post explains a practical multi-account landing zone using Organizations, OU structure, IAM Identity Center, shared networking, centralized logging, and security guardrails.
A practical guide to AWS IAM from an operational perspective. Covers IAM Users, Groups, Roles, Policies, least privilege, account separation, and CI/CD permission design.
A practical comparison of AWS Security Groups and Network ACLs. Covers stateful vs stateless behavior, instance-level vs subnet-level protection, typical production patterns, and common misunderstandings.
A practical guide to designing AWS VPCs. Covers public and private subnets, route tables, NAT Gateways, Internet Gateways, security groups, and the common mistakes teams make early on.
Comparing AWS EKS and Naver Cloud NKS on cost, performance, operational ease, and compliance. Which is better for Korean services?