Jetty is an open-source project providing an HTTP server, HTTP client, and javax.servlet container. This guide is in two parts. The first part emphasizes beginning to use Jetty. It provides information about downloading Jetty, basic configuration on how to change things like the port Jetty runs on, adjusting logging levels, and configuring many of the most common servlet container features like JNDI, JMX, and session management. The second part of this guide describes advanced usages of jetty, specific indepth features like our highly scalable async client, proxy servlet configuration, or configuring the jetty-maven-plugin or using Jetty as an embedded server. The advanced section includes tutorials, howtos, videos, and some reference materials.