An enterprise cloud landing zone is the foundation everything sits on. Get it right and cloud becomes a competitive advantage. This guide covers the 6 design principles of enterprise-grade landing zones.
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1. Security by default — resources are secure without manual config. 2. Policy as code — governance automated. 3. Hub-spoke networking. 4. Least privilege identity. 5. Full observability. 6. Cost accountability via tags.
Platform subscriptions (cloud team managed): Identity, Connectivity, Management. Workload subscriptions (app team owned): one per workload. Sandbox: no production data. Policies at management group cascade down.
Hub contains: cloud firewall, ExpressRoute/Direct Connect gateway, Bastion/Session Manager, DNS, centralised logging. Spokes: one per workload, no direct internet. Benefits: centralised security, simplified compliance.
Federated identity: AD is source of truth. Azure: Entra Connect federates AD. AWS: IAM Identity Center with AD. GCP: Cloud Identity federation. Enforce: MFA for all, PIM for just-in-time admin, break-glass accounts.
Mandatory tags enforced by policy (cost-centre, owner, environment, project). Budget alerts at 80% and 100%. Monthly FinOps review with showback. Centralised RI/Savings Plan purchasing. Quarterly rightsizing.
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