For us, it was managing them, in all senses (development, logging, secure communcation between, etc.). Kubernetes and (Calico for networking) help dramatically

For us, it was managing them, in all senses (development, logging, secure communcation between, etc.). Kubernetes and (Calico for networking) help dramatically to address these problems. I finally really see the value in microservices; before we started using Kubernetes, all my attempts with a microservices approach made me hate them.