Documentation versions (currently viewingVaadin 24)

Removing Legacy Servlets

The MPR framework manages the VaadinServlets to make sure the correct requests are routed to the right frameworks — either Flow or Vaadin 7/8. For that to work, all legacy VaadinServlets have to be removed. If you need some custom functionality, you can use the VaadinServlet provided by Flow instead.

The next step is Converting legacy UIs.