Network Planning Best Practices

Design for security, scalability, and resilience.

• Use CIDR plans with room to grow; avoid overlaps with on‑prem

• Separate public/app/data subnets; isolate CI/CD from prod

• Centralize egress via NAT; restrict egress with firewall rules

• Standardize tags/labels for ownership and audits

• Test DR runbooks: DNS cutover, VPN failover, LB blue/green