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HI, Good Morning,Can any one tell me that does Vaadin compatible with lightweight web server? Thank you-_-
Vaadin requires a Java Servlet Container (which supports servlet API version 2.3 or later), not just a web server.
See e.g. this wiki page and a list of servlet containers. Jetty is small if that matters for you.
For some easy (and free up to a limit) hosting services, see my post in this thread.
Thank you, Henri.