Test: open browser, http://localhost:8080/server-smoke/, push the button 'Please don't smoke'
Admin console: http://localhost:8080
Small download and HD size, fast startup and deployment, nicely integrated with NetBeans and all other IDEs (it is basically a Tomcat on steroids).
Even the fully loaded "plus" version is surprisingly small and fast with commercially available support directly from tomitribe. Another great "microservices" server.
TomEE supports Java EE 7 well, however it is not officially certified (yet?).
This blog is running on TomEE without a restart for > 1 year.