Spring Boot (https://spring.io/projects/spring-boot) is a widely used solution these days for Java web application development. It has an opinionated convention over configuration approach. It is completely configuration driven and makes using Spring Framework and many other third-party libraries a pleasure. Spring Boot applications are production-grade and can just run in any environment that has a JVM installed. It uses an embedded servlet container such as Tomcat, Jetty, or Undertow to run the application. It autoconfigures Spring wherever possible with sensible defaults and has starter POM for many modules and third-party libraries. It does not require any XML configuration and lets you customize autoconfigured beans using Java configuration.