The document discusses how to use Embedded GlassFish to boost productivity by running GlassFish within a Java application using APIs to start, deploy to, and manage GlassFish. It provides an overview of the Embedded GlassFish APIs, distributions, and Maven plugin as well as use cases and the current state of Embedded GlassFish. The Embedded GlassFish APIs allow developers to programmatically start an embedded GlassFish instance, deploy applications to it, and access services like the web container.