 NEW YORK--BUSINESS WIRE--Emerald Holding, Inc. NYSE:EEX Emerald or the Company today announced that it has completed the acquisition of PlumRiver LLC PlumRiver, a leading international provider of software-as-a-service technology through its Elastic Suite solution. Elastic Suites platform streamlines the wholesale buying process for both brands and retail buyers, creating a digital year-round transactional platform for use by Emeralds customers. The acquisition will accelerate E 