Tomcat is an application server that Hybris uses to run web applications. It consists of several components including the Tomcat instance, container, and connectors. Filters and listeners can be used to inject custom processing into Tomcat's lifecycle. The AJP connector translates requests from the web server into a format the Catalina engine can process. Tc Server provides multi-instance support and variable substitution that Hybris leverages to customize and run multiple instances of Tc Server.
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