Koyeb aims to provide a fast, global, secure, and scalable serverless platform for deploying applications by evolving from Kubernetes to a custom stack featuring Nomad, Firecracker, and Kuma on BareMetal. Initially, Kubernetes was used to quickly build the platform, but limitations in complexity, scalability, and multi-zone deployment led to a shift. Nomad was chosen for its simplicity, extendability, and ability to orchestrate workloads across multiple zones, while Firecracker was selected for its efficient, secure virtualization of multi-tenant workloads. Kuma, an open-source service mesh, facilitates secure and reliable communication between distributed services, supporting multi-region and cloud-agnostic deployments. This new architecture allows Koyeb to efficiently manage containerized applications and microservices, enhancing the serverless experience for developers by providing fast deployment, secure isolation, and reduced overhead, ultimately contributing to a highly adaptable platform that meets the dynamic needs of global cloud service users.