Point of Contact
The point of contact (POC) is a person acting as a representative of a department or organization or coordinator regarding a specific topic.
Depending on your relationship with the company, POC can be an individual, e.g., AE, project manager, or a whole department, e.g., support.
Also referred to as a single point of contact, they are responsible for handling communication with the potential or current customers.
Having a single person do that helps avoid miscommunication and improve customer experience.