I have an idea of web-application.
As an option I'm considering Java+Appengine as technology, but in future I will need possibility to create instances of application without using GAE.
So, I have a questions:
is it possible to migrate application from GAE to some application server (Tomcat for example)?
What I need to take into account from that start for easier migration?
Or In that case it is easier to create application not for GAE?
Thank you!
If you write to the subset of the servlet API that Google provides, then yes.