HERNDON, Va., Sept. 20, 2017 -- Deltek, the leading global provider of enterprise software and solutions for project-based businesses, announced today that it has acquired WorkBook. Together, Deltek and WorkBook will provide unparalleled solutions and services to its combined global customer-base in the creative agency space. This acquisition accelerates the momentum of Deltek's solutions for the Creative industry by bringing in more resources, capabilities and expertise.