The Discovery Framework is built upon the Liferay Portal Enterprise Edition.
Liferay Portal is an open-source JSR-286 portal technology. The Discovery Framework extends basic Liferay functionality to provide enhanced user management, security, and cross-component interaction, as well as performance-optimized communication with Endeca MDEX Engines.
This version of the Discovery Framework is built upon Liferay Portal 5.2 Enterprise Edition Service Pack 5.