Proficient GCP network infrastructure: VPCs, subnets, firewall rules, VPC routing, Network Connectivity Center, Cloud Router, CloudVPN, Cloud Interconnect, CloudNAT, load balancers, private service connections, logging, alerting, and troubleshooting. Expert AWS network infrastructure: VPCs, subnets, security groups, route tables, Virtual Private GW, Transit Gateway, Cloud WAN, Site-to-Site VPN, Direct Connect, NACLs, load balancers, peering, logging, alerting, and troubleshooting.