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Discover our latest articles about cloud-native technologies, Kubernetes, DevOps, and modern software development. From practical tutorials to in-depth analyses.

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Stay up to date with our latest articles about cloud-native technologies, Kubernetes, and DevOps.

1219 posts

GPU Slicing & Kubernetes: How to Efficiently Share Expensive AI Resources

David Hussain • • 4 min

GPU Slicing & Kubernetes: How to Efficiently Share Expensive AI Resources

In modern IT infrastructure, the GPU has become the new CPU. Whether it's Large Language Models (LLMs), computer vision, or complex data analysis, the demand for computing power on graphics cards has massively increased in the mid-market. However, while CPUs have been efficiently virtualized and shared for decades, GPUs often present platform engineers with a dilemma: A high-end graphics card (like an NVIDIA H100 or A100) is often oversized for a single microservice, yet too expensive to leave idle.

Operations Kubernetes AI Cloud Platform
API Governance in Kubernetes:

Katrin Peter • • 6 min

API Governance in Kubernetes:

Kubernetes is now much more than just a container orchestrator. A vast ecosystem has developed around the platform, with tools, extensions, platform solutions, and automations all built on the same foundations. These foundations are **APIs**. They form the interfaces through which clusters are managed, resources are defined, and components communicate with each other.

Development Kubernetes Automation Cloud native Security
The Automated Auditor: Real-Time Reporting for ISO 27001 on Kubernetes

David Hussain • • 5 min

The Automated Auditor: Real-Time Reporting for ISO 27001 on Kubernetes

Preparing for an ISO 27001 audit in many companies still resembles a manual Sisyphean task. For weeks, screenshots of configurations are taken, Excel lists are reconciled, and permission matrices are manually validated. In the dynamic world of Kubernetes, where workloads can change by the second, this static approach is not only inefficient but a significant security risk. Realizing that policies are ineffective only at the audit appointment means losing control over governance.

Operations Compliance Kubernetes Cloud native Security
Sovereign Monitoring for Legacy Systems: Integrating SNMP & IPMI into Prometheus

David Hussain • • 4 min

Sovereign Monitoring for Legacy Systems: Integrating SNMP & IPMI into Prometheus

The Cloud-Native transformation is in full swing, yet the reality in German data centers often looks different: alongside cutting-edge Kubernetes clusters, dedicated bare-metal servers, core switches, and uninterruptible power supplies (UPS) perform their duties. These components are critical for operations but often escape the modern observability stack as they do not natively deliver Prometheus metrics over HTTP/OpenMetrics.

Operations Kubernetes Cloud native Digital sovereignty Politics
K3s as a Strategic Standard for Decentralized Cloud-Native Infrastructures

David Hussain • • 5 min

K3s as a Strategic Standard for Decentralized Cloud-Native Infrastructures

The digitalization of manufacturing and the networking of decentralized locations present a fundamental challenge for the German SME sector: Full-scale Kubernetes clusters are often too cumbersome for the resource constraints in factory halls or branch offices. However, if applications are managed manually or through proprietary legacy systems, isolated IT islands are created that are neither scalable nor secure.

Operations Kubernetes Cloud Cloud native Software delivery
Secrets Management: Why Vaultwarden Bridges the Gap Between Dev and Ops

David Hussain • • 6 min

Secrets Management: Why Vaultwarden Bridges the Gap Between Dev and Ops

In modern software development, the unsecured handling of credentials—so-called "Hardcoded Secrets" (static secrets) in Git repositories—is one of the most critical security risks. With the tightening of regulatory requirements in 2026, particularly through NIS-2 and DORA, the protection of API keys, database passwords, and SSH certificates is no longer just a best practice but a mandatory compliance requirement. Mid-sized companies face the challenge of ensuring security without hindering the agility of their DevOps teams.

Development Operations Compliance Security Software delivery
Distributed Tracing 2026: Eliminating Performance Bottlenecks with OpenTelemetry (OTel)

David Hussain • • 4 min

Distributed Tracing 2026: Eliminating Performance Bottlenecks with OpenTelemetry (OTel)

The complexity of modern microservice architectures has reached a point in 2026 where traditional monitoring hits its limits. While metrics tell us *that* a system is slow, and logs reveal *why* a single instance throws an error, causality across service boundaries often remains obscure. In an era where regulations like NIS-2 and DORA demand not only security but also resilience and recoverability of IT systems, blind troubleshooting is no longer a viable business risk.

Development Operations Kubernetes Cloud native Security
Post-Quantum Readiness: Why SMEs Must Harden Their Ingress Strategy Now

David Hussain • • 4 min

Post-Quantum Readiness: Why SMEs Must Harden Their Ingress Strategy Now

The era of "Harvest Now, Decrypt Later" has begun. While quantum computers capable of breaking commonly used asymmetric encryption methods like RSA or ECC are still in development, encrypted data streams are already being recorded by actors today. For German SMEs under the pressure of NIS-2 and DORA, Post-Quantum Cryptography (PQC) is no longer a futuristic scenario but an immediate requirement for digital sovereignty.

Development Kubernetes Cloud native Digital sovereignty Security
Strategic Network Security: ZeroTrust Mesh Networks with Headscale and Netbird as a VPN Replacement

David Hussain • • 4 min

Strategic Network Security: ZeroTrust Mesh Networks with Headscale and Netbird as a VPN Replacement

By 2026, the threat landscape for medium-sized businesses has fundamentally worsened. Regulatory requirements such as NIS-2 and DORA no longer demand just superficial security but proof of granular access controls and minimization of the blast radius in security incidents. Traditional client-to-site VPNs, based on the "Castle-and-Moat" principle, are reaching their limits: once authenticated, a compromised VPN access often allows fatal lateral movement opportunities across the entire subnet.

Operations Kubernetes Cloud native Digital sovereignty Security
Green Ops: Measurable Sustainability in Data Centers through eBPF and Managed Grafana

David Hussain • • 5 min

Green Ops: Measurable Sustainability in Data Centers through eBPF and Managed Grafana

In 2026, sustainability in the IT sector is no longer a "nice-to-have" for marketing but a regulatory necessity. With the tightening of **CSRD reporting obligations** and the full implementation of **NIS-2**, along with specific energy efficiency requirements for data centers, the mid-sized sector is under pressure. Companies must not only estimate the energy consumption of their digital value chain but also accurately demonstrate it at the workload level.

Operations Kubernetes Cloud native Digital sovereignty Software delivery
Data Sovereignty 2026: Sovereign Data Exchange under the EU Data Act

David Hussain • • 4 min

Data Sovereignty 2026: Sovereign Data Exchange under the EU Data Act

In 2026, regulatory requirements for the European economy have reached a new level of quality. With the fully effective EU Data Act and the tightened requirements from NIS-2 and DORA, companies face the challenge of not only storing data but making it controllably shareable in federated data spaces. The focus has shifted from mere storage to granular access control and interoperability.

Development Kubernetes Cloud native Digital sovereignty Politics
Self-Healing Infrastructure: When ArgoCD and AI Agents Close Autonomous Correction Loops

David Hussain • • 4 min

Self-Healing Infrastructure: When ArgoCD and AI Agents Close Autonomous Correction Loops

The era of purely manual intervention in infrastructure incidents is coming to an end. While GitOps with ArgoCD defines the state-of-the-art for declarative deployment, the intelligent bridge between observability data and automated remediation has been missing. In 2026, driven by the regulatory requirements of NIS-2 and DORA for the resilience of critical systems, Infrastructure-as-Code (IaC) transforms into **Self-Healing Infrastructure**.

Operations Kubernetes Cloud native Platform Software delivery
Identity-First Security: Why Keycloak is the Heart of Your NIS-2 Strategy

David Hussain • • 5 min

Identity-First Security: Why Keycloak is the Heart of Your NIS-2 Strategy

In 2026, the threat landscape for European SMEs is more precarious than ever. Identity theft has become the number one attack vector, as traditional perimeter security models have failed in decentralized Cloud-Native structures. At the same time, regulators are increasing the pressure: The NIS-2 directive and DORA demand not only abstract security concepts from companies but also proof of strict access controls and the integrity of digital identities.

Development Kubernetes Cloud native Digital sovereignty Security
WebAssembly (Wasm) in the Cloud: The Next Stage After Containers?

David Hussain • • 4 min

WebAssembly (Wasm) in the Cloud: The Next Stage After Containers?

The cloud-native landscape has consolidated. While Kubernetes stands as the de facto standard for orchestration, the boundaries of runtime efficiency are shifting. In 2026, CTOs and Infrastructure Architects face the challenge of operating increasingly complex microservices architectures while meeting rising demands for energy efficiency (ESG compliance) and performance.

Operations Compliance Kubernetes Cloud Cloud native
From Cost Center to Value Driver

David Hussain • • 5 min

From Cost Center to Value Driver

By 2026, the mere promise of cloud scalability has given way to a harsh reality: those who do not economically manage their Cloud-Native infrastructure lose control over their margins. In times of NIS-2 and DORA, resilience and compliance are mandatory, yet economic efficiency—the "Unit Economics" per workload—has become the decisive competitive advantage. Simply monitoring cloud bills at the end of the month is a relic of the past.

Operations Kubernetes Cloud native FinOps Software delivery
Kubernetes as an AI Backbone: Efficient GPU Orchestration for Local LLMs

David Hussain • • 5 min

Kubernetes as an AI Backbone: Efficient GPU Orchestration for Local LLMs

The hype around proprietary SaaS AI models gives way to a sober cost-benefit analysis by 2026. While companies initially paid token fees to hyperscalers willingly, rising OpEx, strict latency requirements, and tightening regulatory frameworks like the EU AI Act and NIS-2 force a rethink. Sovereignty over one's data and control over inference costs lead to a massive shift of AI workloads back to their own Cloud-Native infrastructure.

Operations Kubernetes AI Cloud native Digital sovereignty
From Reactive Patching to Active Resilience: The Cyber Resilience Act (CRA) 2026

David Hussain • • 5 min

From Reactive Patching to Active Resilience: The Cyber Resilience Act (CRA) 2026

In September 2026, the transition period for the Cyber Resilience Act (CRA) ends. What began as a regulatory framework has evolved into the toughest test for European IT infrastructures. Companies are now obligated to secure the entire supply chain of their digital products—from the first line of code to productive deployment—without gaps. Those who disregard the required security standards and reporting obligations risk not only draconian fines but also losing market access within the EU in case of non-compliance.

Operations Compliance Cloud native Security Software delivery