online chat

noun
  1. A form of communication over the Internet that offers a real-time transmission of text messages from sender to receiver. noun
    We engaged in an online chat to discuss the project details.
    Online chat allows users to communicate instantly regardless of their location.
  2. A feature or service on a website or application that enables users to communicate with each other or with customer service representatives in real-time. noun
    The website offers an online chat service for customer support.
    I used the online chat feature to ask questions about my order.