Finding out about performance issues and collecting metrics on the usage of your app is important. Add Application Insights to your apps and let the reports tell you what is wrong and allow you to track all kinds of dimensions.
What are we trying to accomplish? Azure runs a very decent Kubernetes service these days. I have used it as the main infrastructure in a couple of projects and am quite impressed. Impressed enough to even suggest it as the target platform for our largest projects 😊
Say you want to use an Azure DevOps pipeline to build your containerized app. This scenario is of course supported and you would leverage all the built-in stuff (built-in container image, default container tasks, hosted build agent, etc.). You can even choose between the UI or YAML to configure the build pipeline.