Apache Tomcat is an open source web server and servlet container developed by the Apache Software Foundation. It is used to deploy Java-based web applications and provides an environment to run Java code. Tomcat provides a lightweight, flexible, and secure platform for running Java applications. With its modular architecture, Tomcat is easy to configure, deploy, and manage. It is also highly extensible, allowing developers to customize its features and functionality. With its highly optimized performance, Tomcat is suitable for both small and large web applications. Furthermore, it is designed to be secure and reliable, offering enhanced protection from malicious attacks. Tomcat is the perfect choice for developers looking for a robust and reliable web server and servlet container.