We require a steady, free, and open source web server that we can use to create and run Spring-Framework-based ventures. We will utilize Apache Tomcat, which is easy to understand for all developers of Java. You can also use Jetty or Undertow to develop in Spring.

Tomcat is an open source web server. This allows the utilization of Java Servlets and JavaServer Pages (JSP) for the Java server. The core segment of Tomcat is Catalina.

You can download Tomcat 9.0.11 from https://tomcat.apache.org/download-90.cgi.

If you use Tomcat version 9, you have to use Java version 8 or later. According to the Apache Tomcat source, this version builds on Tomcat 8.0.x and 8.5.x, and implements the Servlet 4.0, JSP 2.3, EL 3.0, WebSocket 1.1, and JASPIC 1.1 specifications (the versions required by the Java EE 8 platform).

Let's see how to configure and verify the Tomcat server.