The Business Service Network (BSN) is a nationwide network dedicated to providing service support to the U.S. Postal Service’s largest customers for service issues, information and request needs. The BSN is strategically positioned to have an impact on customer satisfaction and revenue growth and retention. The BSN provides customer service for the Postal Service’s 22,000 largest customers. BSN customers have a combination of complex issues across multiple areas and generate extremely high Postal Service revenue.