A set of phases during which a request for a page is received, a UI component tree representing the page is processed, and a response is produced. During the phases of the life cycle:

• The local data of the components is updated with the values contained in the request parameters.
• Events generated by the components are processed.
• Validators and converters registered on the components are processed.
• The components' local data is updated to back-end objects.
• The response is rendered to the client while the component state of the response is saved on the server for future requests.