XTech Solutions's Contract Deliverables
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Livestock Information is a DEFRA-backed programme focused on modernising how livestock movement, identification and traceability information is managed across England.
Azure DevOps / Landing Zone Repository Structure
- This diagram represents a secure Azure DevOps and GitHub Enterprise repository structure for delivering governed Azure landing zones using Infrastructure as Code, CI/CD automation and DevSecOps controls.
- The approach separates the platform into clear architectural domains: management and governance, hub connectivity, spoke landing zones, and pipeline automation. This separation allows each area to be developed, reviewed, secured and deployed independently while still following a consistent enterprise pattern.
- The management and governance layer provides central control across the Azure estate. It includes Management Groups, Azure Policy, RBAC, Entra ID integration, Privileged Identity Management, monitoring, Defender for Cloud, tagging and cost-management controls. These standards are applied consistently across subscriptions to support compliance, security and operational governance.
- The connectivity layer follows a hub-and-spoke design. The hub virtual network provides shared services such as Azure Firewall, network security groups, route tables, DNS resolver, private DNS zones, Bastion, jumpbox access, NVA/IDS services and central monitoring. Spoke VNets are peered to the hub, allowing isolated application environments to consume shared connectivity, security and logging services.
- The platform and landing zone layer separates environments such as Canary, Development, Test, PPE and Production into dedicated subscriptions and spoke VNets. Each environment contains standardised subnets and core platform services including application subnets, data subnets, private endpoints, Key Vault, storage accounts and hosting services such as App Services, AKS, virtual machines or Functions. This provides clear environment isolation while maintaining a repeatable landing zone blueprint.
- The repository structure supports modular delivery. Separate repositories or folders are used for management groups, policy initiatives, RBAC and identity, monitoring, shared Terraform modules, hub networking, firewall configuration, private DNS, on-premises connectivity, platform spokes and pipeline automation. This makes the platform easier to maintain, test, review and scale across multiple environments.
- The CI/CD flow promotes controlled change from code commit through pull request review, validation, security scanning, Terraform planning and approval gates before deployment. Changes are promoted progressively through Canary, Dev, Test, PPE and Production, with production protected by approval controls and audit history.
- This model supports a security-first DevOps approach by embedding governance, least-privilege access, policy enforcement, monitoring, auditability and automated validation into the delivery process. It enables development and platform teams to deploy Azure infrastructure in a consistent, repeatable and controlled way while maintaining compliance in regulated or security-sensitive environments.