The document summarizes Arquillian, a testing platform that allows tests to run inside containers. It provides three key points: 1. Arquillian Core allows tests to run portably across any supported container. 2. Tests can be run from IDEs and build tools. 3. Arquillian extends and integrates with test frameworks like JUnit and TestNG, and supports containers including WildFly, Tomcat, GlassFish and more.