Web workers use customer relationship management (CRM) software to help them better understand their users and even to manage the communication and information connected to each user. When you know more, you can market products and services more precisely and gain more conversions in the process (with far less work and error). 

Managing customers and information is far too complicated without a CRM today which is why spending on CRM has exploded in the past few years.

Read the "Big List of CRM Software"