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Management Groups · Subscriptions · Azure Policy · Network · Identity · Defender

Azure Landing Zones
& Tenancy Architecture

A well-designed Azure landing zone is the foundation every workload depends on. eAppSys designs, builds, and validates Azure landing zones aligned to the Microsoft Cloud Adoption Framework and the Azure Well-Architected Framework.

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Azure Landing Zones & Tenancy Architecture

Azure Landing Zones & Tenancy Architecture — Service Areas

eAppSys delivers “Azure Landing Zones & Tenancy Architecture” aligned with the Microsoft Cloud Adoption Framework and Azure Well-Architected Framework. We design secure, scalable foundations covering management groups, subscriptions, networking, identity, governance, security, and infrastructure as code — giving your teams a controlled environment for deploying Azure workloads.

Management Group & Subscription Design

  • Management Group hierarchy — Platform, Landing Zones, Decommissioned, Sandbox
  • Subscription design — per workload, per environment, or per team
  • Subscription vending model for self-service subscription provisioning
  • Budget and cost allocation by subscription — tagging and policy enforcement
  • Azure Tenant configuration — primary domain, emergency access, audit logging
  • Management group policy inheritance — enforcing guardrails at scale

Network Topology Design

  • Hub-and-spoke — central hub VNet, Azure Firewall, spoke VNets per workload
  • Azure Virtual WAN — Microsoft-managed hub for global deployments
  • On-premises connectivity — ExpressRoute or VPN Gateway with BGP
  • DNS architecture — Azure Private DNS Zones, custom DNS resolvers
  • Network segmentation — subnets, NSGs, Application Security Groups
  • Azure Firewall policy — DNAT, SNAT, TLS inspection, IDPS

Identity & Access Architecture

  • Entra ID tenant design — primary tenant, B2B, B2C, external identities
  • Hybrid identity — Entra Connect Sync or Cloud Sync for on-premises AD
  • RBAC design — custom roles, least-privilege, PIM for privileged roles
  • Conditional Access — MFA, device compliance, location-based access
  • Managed Identities — replacing service account credentials
  • Entra ID Governance — access reviews, lifecycle workflows

Azure Policy & Governance

  • Policy Initiative design — Deny, Audit, DeployIfNotExists per workload
  • Regulatory compliance initiatives — ISO 27001, Cyber Essentials, GDPR, CIS
  • Policy as code — Azure Policy in Bicep/Terraform, version-controlled in Git
  • Resource tagging policy — mandatory tags enforced at deployment
  • Allowed locations — restricting deployments to UK regions
  • Remediation tasks — automatically remediating non-compliant resources

Defender for Cloud Baseline

  • Defender CSPM — Secure Score baseline and posture remediation
  • Defender plans — Servers, Storage, SQL, Key Vault, App Service, Containers
  • Security alerts and Sentinel Log Analytics Workspace integration
  • Just-in-Time VM access — eliminating always-open management ports
  • Vulnerability assessment — integrated scanning for VMs and containers
  • Regulatory compliance dashboard — UK/EU framework mapping

Landing Zone Deployment

  • IaC — Bicep or Terraform for all landing zone components
  • Azure Landing Zone Accelerator — Microsoft reference implementation customised
  • CI/CD pipeline for landing zone — GitHub Actions or Azure DevOps
  • Landing zone validation — Well-Architected Review against all five pillars
  • Handover documentation — ADRs, runbook, governance guide
  • Workload onboarding guide — how new teams deploy into the landing zone

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Microsoft Azure

Accreditation & Recognition

ISO 9001:2015
BS EN ISO/IEC 27001:2022
Cyber Essentials Plus
ICO Certified
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Delivery Approach

Delivery Approach

eAppSys delivers Azure engagements in a structured phased approach — clear outputs and decision gates at every stage.

01

Design

Management groups, subscription model, network topology, identity, policy baseline — documented in ADRs

02

Build

IaC authored; Policy initiatives created; network deployed; Defender baseline applied

03

Validate

Well-Architected Review; policy compliance check; connectivity testing; penetration test readiness

04

Handover

Runbook, onboarding guide, CI/CD pipeline live; first workload deployed

Why eAppSys

Your Azure Partner

CAF-Aligned Landing Zone

eAppSys designs landing zones aligned to the Microsoft Cloud Adoption Framework — not bespoke architectures that diverge from Microsoft best practice and create upgrade debt with every new Azure feature.

Policy as Code from Day One

Azure Policy, RBAC, and network guardrails are all deployed as version-controlled IaC from day one — not applied manually and documented in a Word document that drifts from reality.

Zero-Trust Networking Baseline

Every landing zone starts from zero-trust — least-privilege network access, segmented subnets, Azure Firewall egress inspection, Private Endpoints for PaaS, and PIM for privileged role activation.

Oracle/Azure Landing Zone Specialist

eAppSys designs Azure landing zones that accommodate Oracle workloads — VNet peering to Oracle Cloud Interconnect, DNS for OCI-hosted databases, and identity federation between Entra ID and Oracle IAM.
Common Questions

Frequently Asked Questions

What is an Azure landing zone?
An Azure landing zone is a pre-configured Azure environment providing the foundational capabilities every workload needs — management group hierarchy, subscription structure, network topology, identity and access (Entra ID, RBAC, Conditional Access), Azure Policy guardrails, and a Defender for Cloud security baseline. eAppSys designs landing zones aligned to the Microsoft Cloud Adoption Framework, enabling compliant, well-governed workload deployment from day one.
The Microsoft Cloud Adoption Framework (CAF) is Microsoft’s guidance for cloud adoption — covering strategy, planning, readiness (landing zone), migration, modernisation, and governance. eAppSys uses the CAF for every Azure engagement, particularly for landing zone design where it provides the reference architecture for management groups, subscriptions, networking, identity, and policy governance.
Hub-and-spoke uses a customer-managed central hub VNet with Azure Firewall for traffic inspection, with spoke VNets peered to the hub — maximum control, well-suited for single-region deployments. Azure Virtual WAN is Microsoft-managed, providing automated hub management, optimised routing, and native global connectivity for multi-region or large-scale deployments. eAppSys selects based on scale, connectivity requirements, and management model.
eAppSys deploys all landing zone components as Infrastructure as Code — Bicep or Terraform — version-controlled in Git. Azure Policy initiatives, management group structures, network resources, and RBAC assignments are all IaC-defined, ensuring the landing zone is reproducible, auditable, and updatable via CI/CD pipeline rather than through manual portal changes.
eAppSys delivers: a deployed, validated Azure landing zone with all IaC in Git; Azure Policy initiatives enforcing security and governance guardrails; network topology deployed and tested; Defender for Cloud baseline configured; a Well-Architected Review report; an architecture decisions record (ADR); a runbook for operations; and a workload onboarding guide for new teams.
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