Encapsulating functionality: Web Components – set of new standards from Google. It’s time to adopt or maybe look back? It’s seems, we have had something similar, or it is absolutely different? JSF components – Oh, no! Or give a chance? Go forward to a client’s browser or review new features in server? How to start using Polymer under Spring Boot or maybe it will be PrimeFaces. Glance from back-end (and slightly manager) perspectives.