Configuration file used for servlet container, for more information see wikipedia:web.xml. It contains the configuration for the servlets, MIME mappings, and since OLAT 6.3.x a list of Spring configuration files for the application context.
Configured Servlets:
org.olat.core.servlets.OLATServlet
org.olat.core.servlets.SecureWebdavServlet
org.olat.commons.servlets.ICalServlet
org.olat.commons.servlets.RSSServlet
com.sun.jersey.spi.container.servlet.ServletContainer configured for org.olat.restapi.support.OlatRestApplication
The Spring Application Context is configured within the web.xml and the order of the listed files defines the overriding hierarchy for beans. Spring files residing in a JAR file (e.g. olatcore.jar) need to be referenced by a full path. The OLAT LMS Spring configuration files are resolved with a wildcard search on the classpath.