VICTORIA, British Columbia & MANCHESTER, New Hampshire--(BUSINESS WIRE)--Unit4, a fast growing leader in enterprise applications for service organizations, is pleased to announce the Southern Illinois University Foundation (SIU Foundation) in Carbondale, Ill., has joined its growing list of non-profit customers. With a $123 million endowment and more than 2,600 accounts to manage, the Foundation’s CFO Steve Nagle says Unit4 Business World’s agile People Platform will provide the Foundation with