Question

Which is a system for maintain customer information and connections?

Answer 1

The answer is contact management CRM systems. This is the process of recording contacts details and tracking their interactions with a business. Such systems have gradually evolved into an aspect of customer relationship management. This maintain customer contact information and identify prospective customers for future sales, using tools such as organizational charts. 

Answer 2

The system to maintain customer information and connections is CRM (customer relationship management).  It is the strategy that a company uses to keep its customers happy and loyal.  It is also a strategy for managing an organisation's relationships and interactions with customers and potential customers.