Customer relationship management (CRM) software is a contact list with a brain. It not only records your customers' contact information, it remembers the details of your relationship and every interaction, whether by phone or email.
CRM software can deliver those benefits because they organize and record the institutional knowledge all businesses maintain about their customers.
CRM software isn't just about tracking and maintaining contact information. While most look to CRM software as primarily a sales tool, it's moved beyond that space.