Summary

In this chapter, we’ve learned about Cloud Native architectures, applications, and their features. Not every application that runs in the cloud automatically becomes Cloud Native. In fact, Cloud Native principles can be successfully applied also on-premises and not just in the cloud. We’ve briefly discussed the benefits of Cloud Native and in-depth about two core features—resiliency and autoscaling. While Cloud Native applications do not strictly require Kubernetes to run them, K8s makes things much easier with its self-healing capabilities and multiple autoscaling mechanisms: HPA, VPA, and Cluster Autoscaler.

Next, we covered Serverless or FaaS—a newer, event-driven computing model that comes with autoscaling and requires almost no operations at all. With Serverless, we are not responsible for any OS, security patching, or server life cycle. Serverless is also billed based on the actual usage calculated by the number of actual function invocations...