OpenK9 is a complete Cognitive Enterprise Search solution that fits all your needs. Powerful, Modern and Flexible, it employs Machine Learning to enrich your data and give the best experience possible. OpenK9 - 5 Tenant allows you to extend the use of the solution to up to 5 tenants. PAC Openk9 Subscription ( https://marketplace.liferay.com/p/pac-openk9-subscription ) is a requirement.