Derek Mortimer

semver-utils: Streamlined semantic versioning from pipelines

Posted on March 30, 2025 by Derek Mortimer

At CECG , a recurring task we run into is the management of semantic version tags in Git repositories from automated pipelines. It’s straightforward in principle — just follow the Semantic Versioning rules! But in practice, we often saw a range of implementations with varying degrees of testing. To address this task in a repeatable and reusable manner, we built semver-utils , which we’re releasing under open-source now.

Comparison: Kubeadmiral and Karmada

Posted on March 17, 2025 by Derek Mortimer

Kubeadmiral, Karmada, and Multi-cluster Federation Standards A client recently asked us for a comparison of two multi-cluster Kubernetes management technologies, specifically Kubeadmiral and Karmada . In this post we’ll introduce these technologies, and the Kubernetes standards that influenced their architecture, to enable multi-cluster workload orchestration. The focus will be entirely on managing the manifests inside existing Kubernetes clusters, specifically excluding discussion of standards such as the Cluster API which are concerned with the provisioning of new clusters from scratch.

Automated Landing Zones in GCP Organizations

Posted on August 12, 2024 by Derek Mortimer

What is a Landing Zone? As cloud usage increases across organizations and more teams deploy resources, it becomes increasingly important to stay organized as platform operators to be able to ensure security best practices are being applied and also be able to attribute resources to their owners (e.g., for cost attribution, to discover responsible people/teams).

Case Study: Seamless Cross-cloud Application Deployments

Posted on February 14, 2024 by Derek Mortimer

Where We Were Driven by a long-term engagement with CECG, one of our longest-standing clients had a well-established Kubernetes-based Internal Developer Platform (IDP) known as the Core Platform running on AWS. This platform allows application teams to easily deploy, test and promote their releases through a variety of environments with complete autonomy and automation. The automation and progressive delivery also automate all of the centralised bookkeeping required to do customer-impacting production releases.