Real World Example

Although everything you’ve learned so far is cool and interesting, the important questions are: How does it bring value? and How does it keep businesses running and make them more agile and resilient?

Let’s take a minute to run through a common real-world example: making updates to applications.

We all know that updating applications is a fact of life – bug fixes, new features, performance improvements, etc.

The figure below shows a simple application deployed on a Kubernetes cluster as a bunch of Pods managed by a Deployment. As part of it, there’s a Service selecting on Pods with labels that match app=biz1 and zone=prod (notice how the Pods have both of the labels listed in the label selector). The application is up and running.