The initials CRM stand for Customer Relationship Management, which is usually used to manage and store information that is related to the business clients.
CRM Integration is the process of sending your leads information to a CRM.
When you configure a CRM in Hover Lead, you are actually describing to the Hover Lead how to send that information to the CRM and what are the optional responses in cases of success and failure.
In Hover Lead you can integrate leads into multiple CRM systems or applications, you can save an integration setting for later use, and you can load saved integrations to apply on any of your leads’ panels.
For more information see CRM Integration Overview