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Glossary term

NAT Gateway

NAT Gateway on AWS is $0.045 per hour ($32.40 per month per gateway) plus $0.045 per GB data processed. Dev VPCs with one NAT per AZ across three AZs run $97 per month before any traffic flows. Many estates have NAT Gateways provisioned by Terraform modules that never get cleaned up. Detection: NAT Gateways in non-production VPCs with low data-processing volume. Fix: consolidate to single-AZ in non-prod, or replace with NAT Instance / VPC endpoint for specific traffic.

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Each row is a lesson that uses this term. The lesson where it first appears is the canonical definition.

T0 / M0.1 / L1 What's actually in a cloud bill T0 / M0.1 / L5 The ten cost mistakes that show up on every bill T0 / M0.5 / L1 AWS cost surface, services that print money

Start with the bill.

Foundations takes about five hours. The first lesson is nine minutes.

Open curriculum. No login. No paywall. 237 lessons across 7 courses, three publicly verifiable credentials. Read it on the train, take the exam on a Saturday, list the credential on your résumé Monday.

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5h median time to finish Foundations
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Multi-cloud automation· Production-ready in 30 min· SOC 2 · ISO 27001· 30% average cloud cost cut· 4 platforms · 1 console· Multi-cloud automation· Production-ready in 30 min· SOC 2 · ISO 27001· 30% average cloud cost cut· 4 platforms · 1 console·