https://d2solutions.hr/blog/ Notes on DevOps, platform engineering, SRE, AI infrastructure, and cloud migration from D2 Solutions. en https://d2solutions.hr/blog/azure-tenant-migration-nz-electricity-authority/ https://d2solutions.hr/blog/azure-tenant-migration-nz-electricity-authority/ How D2 Solutions helps migrate the Electricity Authority, the Crown entity that governs New Zealand's electricity market, from one Azure tenant to another: managed identity everywhere, zero client secrets, YAML pipelines, and cutover waves. Cloud Migration Mon, 06 Jul 2026 00:00:00 GMT https://d2solutions.hr/blog/terraform-azure-landing-zones-lessons/ https://d2solutions.hr/blog/terraform-azure-landing-zones-lessons/ Practical landing zone lessons from live migration programmes: who owns the VNet, per-workload state, naming as a contract, workload identity instead of stored secrets, and why your Terraform should inhabit the landing zone rather than create it. Cloud Migration Mon, 06 Jul 2026 00:00:00 GMT https://d2solutions.hr/blog/seven-legacy-systems-migration-nz-insurer/ https://d2solutions.hr/blog/seven-legacy-systems-migration-nz-insurer/ Migrating seven legacy workloads for Partners Life, a New Zealand life insurer: inventory-first discovery, per-workload landing zones, Terraform naming as a contract, workload identity instead of stored credentials, and the Logic App in a VNet problem. Cloud Migration Sun, 05 Jul 2026 00:00:00 GMT https://d2solutions.hr/blog/multi-region-azure-platform/ https://d2solutions.hr/blog/multi-region-azure-platform/ How we rolled out GPU VM fleets across Australia, the US, and Germany, and put production telemetry behind private endpoints for a global SaaS document platform. Platform Engineering Sun, 31 May 2026 00:00:00 GMT https://d2solutions.hr/blog/why-we-built-horizon/ https://d2solutions.hr/blog/why-we-built-horizon/ Horizon connects sprint delivery, Kubernetes runtime, and AI-generated analysis in one platform. Here is the problem it solves and where it is today. Product Sun, 31 May 2026 00:00:00 GMT https://d2solutions.hr/blog/hotel-network-security-assessment/ https://d2solutions.hr/blog/hotel-network-security-assessment/ Findings from authorized security assessments of hotel networks reveal critical gaps in guest data protection, network segmentation, and IoT device isolation. Security Tue, 24 Mar 2026 00:00:00 GMT https://d2solutions.hr/blog/home-assistant-apartment-automation/ https://d2solutions.hr/blog/home-assistant-apartment-automation/ A practical guide to building smart office automation with Home Assistant covering motion-activated lighting, air quality management, security systems, and energy optimization. Smart Home Wed, 18 Feb 2026 00:00:00 GMT https://d2solutions.hr/blog/kubernetes-multi-tenant-architecture/ https://d2solutions.hr/blog/kubernetes-multi-tenant-architecture/ Lessons learned from managing 7 Kubernetes clusters serving 10+ tenants, including namespace isolation, resource quotas, and network policies. Kubernetes Thu, 15 Jan 2026 00:00:00 GMT https://d2solutions.hr/blog/gpu-infrastructure-ai-inference/ https://d2solutions.hr/blog/gpu-infrastructure-ai-inference/ Setting up production GPU infrastructure with NVIDIA H100, MIG partitioning, and KAITO on Azure Kubernetes Service. AI/ML Thu, 20 Nov 2025 00:00:00 GMT