Designing Secure, Resilient, AI-Ready Hybrid & Multi-Cloud Infrastructures

Real-world architectural evidence from large-scale transformation programs in regulated industries

I am an Enterprise Architect specializing in:

• Hybrid & multi-cloud strategies
• Network modernization & segmentation
• Zero Trust security & identity-driven access
• Cloud-native governance & workload hardening
• Data center optimization & migration
• Risk-informed decision frameworks

This is not a traditional code repository.
This is an Architectural Evidence Library a collection of sanitized, real-world case studies, decision rationales, patterns, and governance models drawn from complex enterprise transformations in healthcare, finance, public sector, and large distributed organizations.

• Hybrid & multi-cloud architecture blueprints (workload placement, data residency, resilience)
• Network modernization patterns (MPLS → SD-WAN, data center relocation & optimization)
• Zero Trust & security posture implementations (NAC, identity, SecOps, continuous protection)
• Cloud-native governance & hardening patterns (Kubernetes, policy-as-code, compliance alignment)
• Migration strategies, cutover approaches, risk models & operational designs
• Architecture decision records (ADRs) and lessons learned from production environments

Each repository or folder represents my most recent and relevant consulting engagements focused on why decisions were made, how trade-offs were handled, and what outcomes were achieved.

• 00-Architecture Principles
  Enterprise Architecture principles for designing secure, resilient, AI-ready hybrid infrastructures across network, cloud, and security domains.

• 01-Hybrid-Multi-Cloud-Blueprints
  Patterns for regulated industries (healthcare & finance), secure workload distribution, data sovereignty, resilience, and zero-trust segmentation across on-premises and multiple clouds

• 02-Network-Modernization
  Large-scale MPLS-to-SD-WAN transformations, data center optimization & relocation methodologies, risk-mitigated cutover strategies

• 03-Zero-Trust-Security
  Practical application of zero-trust principles using Cisco ISE/NAC, identity driven micro-segmentation, endpoint protection & SecOps practices

• 04-Cloud-Native-Governance
  Cloud agnostic governance models, AKS / Kubernetes hardening, policy enforcement patterns, compliance alignment (CIS, regulatory frameworks)

All designs and case studies are shaped by these consistent principles:

• Security & Identity — Secure by Design, Identity as the new perimeter
• Operational Excellence — Observability-first, Network as Control Plane, Governance embedded early
• Architectural Flexibility — Cloud-agnostic patterns, strong resilience & reliability focus
• Future-readiness — Foundations prepared for AI/ML workloads and data-intensive services

Enterprise Architect with 20+ years of experience evolving complex network & security environments into secure, governable, and cloud-ready platforms.

Most recent focus areas include:

• Hybrid/multi-cloud transformations in regulated sectors
• SD-WAN & network modernization at scale
• Zero Trust program implementation
• Data center consolidation, optimization & relocation
• Cloud repatriation and hybrid disaster recovery strategies
• AI-ready infrastructure foundations

To show how enterprise architecture is practiced in reality — beyond slideware, beyond vendor demos, centered on:

• High-quality architectural decisions
• Risk understanding and mitigation
• Governance that survives production
• Trade-off navigation in complex, regulated environments

“Architecture is not what we deploy.
Architecture is how we decide.”

Open to interesting challenges in enterprise architecture, hybrid cloud strategy, zero trust transformation, and AI infrastructure foundations.

Feel free to explore the repositories — feedback and thoughtful questions are always welcome.

Jonathan Tene
Enterprise Architect | Hybrid Cloud · Zero Trust · Network Modernization
LinkedIn • Email