Apache Tomcat is an open-source software implementation of the Java Servlet, JavaServer Pages, Java Expression Language and WebSocket technologies. Coursera's Apache Tomcat catalogue teaches you about the powerful, reliable, and scalable server environment provided by Apache Tomcat. You'll learn everything from deploying and managing applications, setting up web servers and databases, to handling large-scale websites and applications. With a focus on server administration and web services, you'll be equipped to enhance website performance and security, manage server resources, and develop robust applications using Java technologies. Whether you are a web developer, system administrator, or a software engineer, mastering Apache Tomcat will significantly broaden your skill set and increase your value in the IT industry.