The progression of microservices in the industry resembles me the way microservices progressed at Google. First, a common container format. Then, a way to express complicated systems in terms of containers. Then, tools to deploy them and services to schedule them. Then, core networking services to support the complicated networking requirements of our highly large systems with complex dependencies. Then, observability: collecting diagnostics data not just to recognize and debug production problems, but also to provide critical signals about usage to our highly adaptive and scalable environment.