Working with Kubernetes namespaces enables you to manage users spread across multiple teams and projects. Namespaces are essentially virtual clusters backed by the same physical single cluster. As Kubernetes clusters help in managing workloads and deployed objects, these numbers increase and can become unmanageable over time.

Kubernetes namespaces - they’re an essential feature for building modern cloud architectures. Namespaces let you split up a single cluster into multiple “virtual clusters”. Resources like pods, replicasets, and deployments all live in namespaces. You can think of a namespace as being a resource’s last name - it specifies which family the resource is part of - and normal resources can have one and only one namespace (There are exceptions like the Node resource which is cluster-wide and doesn’t belong to any namespace). If you don’t think you’re using namespaces on your cluster then you’re wrong. You’re actually just putting everything into the default namespace.