I have spent many years dreaming about building my own cloud platform. After several attempts within different companies, I finally launched my own project, Cozystack. In this article, I am going to share our experience and our approach to building a modern infrastructure platform around Kubernetes and its API. I’ll dive into the “platform approach” — what platform is, how it works, who it’s for, and how to get one off the ground. Plus, I’ll compare different architectures, explain why we went with K8s, and show you how we put together a production-grade solution based on it.

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When it comes to running virtual machines in Kubernetes via KubeVirt, the first question engineers ask is: “What is the overhead?” Let’s dive into the details and break it down by three key areas: compute, storage, and network.

To get why there’s almost no CPU overhead, we need to look at how the Linux kernel handles containers.

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Don’t miss out! Join us at our next Flagship Conference: KubeCon + CloudNativeCon events in Amsterdam, The Netherlands (23-26 March, 2026). Connect with our current graduated, incubating, and sandbox projects as the community gathers to further the education and advancement of cloud native computing. Learn more at https://kubecon.io

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Hi! I’m Andrei Kvapil CEO of Ænix and developer of Cozystack, an open source platform and framework for building cloud infrastructure. In this article I’ll walk through the way we deliver applications to Kubernetes, explain why regular GitOps can be awkward in local development, an show how the new tool cozyhr fixes those pain points. The article targets engineers who already know Helm and Flux.

First, I’ll introduce Cozystack, as it’s important for the context. Cozystack is a cloud platform that lets you run and offer managed services — databases, VMs, Kubernetes clusters, and more. Cozystack takes care of the full life‑cycle of every service.

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Hi! I’m Andrei Kvapil CEO of Ænix and developer of Cozystack, an open source platform and framework for building cloud infrastructure. In this article I’ll walk through the way we deliver applications to Kubernetes, explain why regular GitOps can be awkward in local development, an show how the new tool cozypkg fixes those pain points. The article targets engineers who already know Helm and Flux.

First, I’ll introduce Cozystack, as it’s important for the context. Cozystack is a cloud platform that lets you run and offer managed services — databases, VMs, Kubernetes clusters, and more. Cozystack takes care of the full life‑cycle of every service.

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Hello everyone! I’m Andrey Kvapil, CEO of Ænix and developer of Cozystack, an open-source platform and framework for building cloud infrastructure. In this article, I want to share my perspective on how modern cloud patterns have transformed infrastructure approaches, the evolving role of service providers and public clouds in this landscape, and most importantly, how virtualization’s purpose has fundamentally changed in today’s infrastructure stack.

Modern applications rely on an ever-growing stack of technologies: databases, caches, queues, S3 storage, and more. This complexity increases technical and cognitive operational burden on infrastructure teams. As a result, skilled engineers command premium salaries, making infrastructure maintenance far more expensive than application development itself.

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Speaker: Andrei Kvapil, Ænix CEO and founder

Let’s be in touch! aenix.io cozystack.io

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