Cloud Landing Zone Engineering, Migration & DevSecOps Automation
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Challenges
The cloud platform failed to scale reliably. Gaps in standardisation, automation and governance caused environment drift, delivery friction and unclear ownership. As a result, confidence across engineering, security and finance teams declined, limiting the platform’s ability to support growth.
Outcome
The cloud foundation reset improved reliability. Release stability and security consistency increased across environments, while optimised spend replaced reactive cost management. Most importantly, platform teams moved from firefighting to enablement, restoring trust in the cloud platform.
Cloud Modernisation
Challenges
Solution
Technology Stack
Outcomes
Summary: Cloud Foundation & Platform Engineering Modernisation
A large enterprise operating across multiple business units had accelerated its cloud adoption to support digital platforms, data workloads and internal product teams. While this expansion delivered short-term speed, the underlying cloud foundation failed to mature at the same pace.
Over time, the cloud environment became increasingly difficult to operate. Security reviews slowed releases, costs rose without clear accountability, and platform teams were forced into a reactive operating mode. What initially appeared to be isolated deployment and cost issues were symptoms of a deeper platform engineering gap.
The organisation engaged with Cloudaeon to re-establish control, standardise delivery and enable the cloud to operate as a governed enterprise platform rather than a collection of disconnected environments.
Client Problem: Cloud Platform Reliability & Governance
From a business standpoint, the cloud was expected to deliver faster releases without compromising security or cost discipline. In practice, the cloud platform struggled to sustain the pace and scale of ongoing growth.
Confidence in the platform eroded across engineering, security and finance teams.
Key challenges observed:
Inconsistent delivery experience
Application teams experienced different behaviours across environments, despite following similar deployment processes. This inconsistency slowed releases and reduced confidence in production readiness.
Security and risk were introduced late
This forced teams into rework and extending approval cycles at the most critical stages of delivery.
Rising cloud costs without ownership
Spend increased steadily, but accountability was unclear. Optimisation efforts lacked the guardrails needed to prevent repeat overruns.
Platform teams operating reactively
Instead of enabling teams, cloud engineers were pulled into incident resolution, access fixes and manual reviews.
Technical Pain Points:
The cloud environment had evolved organically, without a consistent platform blueprint. As scale increased, gaps in standardisation and automation became increasingly visible.
These issues created complexity that was difficult to manage operationally.
Key technical issues included:
No formal landing zone model
Subscriptions and environments were created on demand, with limited isolation or standardisation between workloads.
Inconsistent identity and access controls
Manual role assignments and team-specific patterns increased security risk and audit complexity.
Unstructured network design
Ad-hoc virtual networks made traffic flows hard to secure and troubleshoot.
Manual infrastructure provisioning
Portal-driven changes caused configuration drift and reduced repeatability.
Limited DevSecOps enforcement
CI/CD pipelines lacked embedded security, policy and infrastructure validation.
Governance without automation
Security, tagging and cost standards existed as guidance rather than enforceable controls.
Operational Impact
The technical gaps translated directly into operational instability and delivery friction.
Observed operational impact:
Unpredictable releases
Environment drift caused deployments to fail unexpectedly.
Late security intervention
Issues surfaced after deployment, thereby increasing rework and risk.
High operational overhead
Engineers spent excessive time investigating manual or undocumented changes.
Reactive cost management
Optimisation occurred after overruns, not through preventative controls.
Fragmented ownership
No single team owned the cloud foundation end-to-end.
Root Cause Analysis
Rather than immediately implementing fixes, the team conducted a structured root cause analysis across architecture, operations and governance.
A deeper assessment revealed that the issues were not caused by the cloud platform itself, but by how it was engineered and operated.
Root causes identified:
Lack of cloud platform ownership
Foundational components such as identity, networking, and logging were treated as setup tasks rather than shared platform services.
Manual change accumulation
Infrastructure changes were applied directly in live environments, eroding consistency and making rollback unreliable.
Security positioned as a gate, not a guardrail
Controls were enforced through reviews instead of being embedded into delivery pipelines.
Cost signals without actionability
Usage data existed but was disconnected from policy enforcement or accountability structures.
Scale amplifying inconsistency
Each new workload increased variation instead of benefiting from shared standards.
Solution Architecture: Cloud Landing Zone & DevSecOps Foundation
The solution focused on engineering a repeatable, policy-driven cloud foundation that could scale without introducing fragility.
The landing zone became the mechanism through which governance, security and cost control were applied consistently.
Target architecture introduced:
Standardised landing zone model
A clear subscription hierarchy separated platform services, shared capabilities, and workload environments.
Centralised platform layers
Identity, networking, logging and policy enforcement were implemented once and reused across the estate.
Infrastructure-as-Code as the control plane
All environments became versioned, auditable and reproducible.
DevSecOps embedded by default
Security, compliance and cost controls were enforced automatically within CI/CD pipelines.
Operational and financial observability
Monitoring and cost telemetry provided continuous feedback on platform health.
How We Delivered: Step-by-Step Cloud Engineering
Cloudaeon followed an engineering-led approach, with a controlled, incremental method to reduce risk while restoring confidence. Each step was validated before being standardised.
Delivery approach:
Landing zone design aligned to enterprise standards
Identity, networking and compliance requirements were translated into a concrete platform blueprint.
Environment and subscription isolation
Clear boundaries reduced blast radius and simplified access and cost management.
Reusable infrastructure modules
Standardised components eliminated one-off implementations and manual drift.
Identity and access standardisation
Least-privilege access and managed identities replaced ad-hoc role assignments.
Network consolidation
A hub-and-spoke model provided controlled connectivity and simplified security enforcement.
DevSecOps pipeline hardening
Validation, security scanning and policy checks became non-optional stages.
Policy-as-code enforcement
Security baselines, tagging standards and budget controls were enforced automatically.
Repeatable testing and rollback validation
Ensured platform changes were safe, reversible and measurable.

Technology Stack
The platform was built using a consistent, enterprise-grade toolchain designed for long-term operation.
Core technologies included:
Azure Landing Zone
Terraform (Infrastructure-as-Code)
Azure DevOps CI/CD
Managed Identity & IAM
Policy-as-code frameworks
Hub-and-spoke networking
Centralised monitoring and logging
Secrets management
Outcomes
This cloud foundation reset delivered measurable improvements across reliability, cost control, and delivery velocity.
Most importantly, it restored trust in the platform.
Key outcomes achieved:
Reduced environment provisioning time
Automated deployments replaced manual setup, accelerating onboarding.
Improved release stability
Enforced standards significantly reduced deployment failures.
Stabilised and optimised cloud spend
Preventative governance replaced reactive cost correction.
Consistent security posture across environments
Security controls were applied uniformly without manual intervention.
Platform team enablement
Engineers shifted from firefighting back to platform enablement.
POD & Managed Operations Transition
Following stabilisation, focus moved to sustaining platform health at scale. Operational ownership was formalised to prevent regression.
Engagement evolution:
Dedicated Cloud Engineering POD
Maintained platform standards while onboarding new workloads.
Continuous optimisation cycles
Regular reviews prevented drift and performance degradation.
Transition to managed cloud operations
Delivered SLA-backed monitoring, incident response and optimisation.
Single accountable platform owner
Ensured long-term reliability and governance.
Conclusion
This engagement demonstrated that cloud challenges at scale are rarely caused by the cloud itself.
They start from missing platform ownership, inconsistent foundations and reactive governance. By engineering the cloud foundation to be automated, governed and observable, the organisation restored control without sacrificing speed.
If your cloud platform is facing similar scale and governance challenges, a focused platform reset is often the most effective starting point. Talk to a cloud expert now!
